winddi.h header

This header is used by multiple technologies. For more information, see:

• Component Object Model (COM)
• Display Devices Reference
• System Services

winddi.h contains the following programming interfaces:

Functions

BRUSHOBJ_hGetColorTransform The BRUSHOBJ_hGetColorTransform function retrieves the color transform for the specified brush.
BRUSHOBJ_pvAllocRbrush The BRUSHOBJ_pvAllocRbrush function allocates memory for the driver's realization of a specified brush.
BRUSHOBJ_pvGetRbrush The BRUSHOBJ_pvGetRbrush function retrieves a pointer to the driver's realization of a specified brush.
BRUSHOBJ_ulGetBrushColor The BRUSHOBJ_ulGetBrushColor function returns the RGB color of the specified solid brush.
CLIPOBJ_bEnum The CLIPOBJ_bEnum function enumerates a batch of rectangles from a specified clip region; a prior call to CLIPOBJ_cEnumStart determines the order of enumeration.
CLIPOBJ_cEnumStart The CLIPOBJ_cEnumStart function sets parameters for enumerating rectangles in a specified clip region.
CLIPOBJ_ppoGetPath The CLIPOBJ_ppoGetPath function creates a PATHOBJ structure that contains the outline of the specified clip region.
DrvAlphaBlend The DrvAlphaBlend function provides bit-block transfer capabilities with alpha blending.
DrvAssertMode The DrvAssertMode function sets the mode of the specified physical device to either the mode specified when the PDEV was initialized or to the default mode of the hardware.
DrvBitBlt The DrvBitBlt function provides general bit-block transfer capabilities between device-managed surfaces, between GDI-managed standard-format bitmaps, or between a device-managed surface and a GDI-managed standard-format bitmap.
DrvCompletePDEV The DrvCompletePDEV function stores the GDI handle of the physical device being created.
DrvCopyBits The DrvCopyBits function translates between device-managed raster surfaces and GDI standard-format bitmaps.
DrvCreateDeviceBitmap The DrvCreateDeviceBitmap function creates and manages bitmaps.
DrvDeleteDeviceBitmap The DrvDeleteDeviceBitmap function deletes a device bitmap created by DrvCreateDeviceBitmap.
DrvDeriveSurface The DrvDeriveSurface function derives a GDI surface from the specified DirectDraw surface.
DrvDescribePixelFormat The DrvDescribePixelFormat function describes the pixel format for a device-specified PDEV by writing a pixel format description to a PIXELFORMATDESCRIPTOR structure.
DrvDestroyFont The DrvDestroyFont function notifies the driver that a font realization is no longer needed and that the driver can now free any associated data structures it has allocated.
DrvDisableDirectDraw The DrvDisableDirectDraw function disables hardware for DirectDraw use.
DrvDisableDriver The DrvDisableDriver function is used by GDI to notify a driver that it no longer requires the driver and is ready to unload it.
DrvDisablePDEV The DrvDisablePDEV function is used by GDI to notify a driver that the specified PDEV is no longer needed.
DrvDisableSurface The DrvDisableSurface function is used by GDI to notify a driver that the surface created by DrvEnableSurface for the current device is no longer needed.
DrvDitherColor The DrvDitherColor function requests the device to create a brush dithered against a device palette.
DrvDrawEscape The DrvDrawEscape function is the entry point that serves more than one function call; the particular function depends on the value of the iEsc parameter.
DrvEnableDirectDraw The DrvEnableDirectDraw function enables hardware for DirectDraw use.
DrvEnableDriver The DrvEnableDriver function is the initial driver entry point exported by the driver DLL.
DrvEnablePDEV The DrvEnablePDEV function returns a description of the physical device's characteristics to GDI.
DrvEnableSurface The DrvEnableSurface function sets up a surface to be drawn on and associates it with a given physical device.
DrvEndDoc The DrvEndDoc function is called by GDI when it has finished sending a document to the driver for rendering.
DrvEscape The DrvEscape function is used for retrieving information from a device that is not available in a device-independent device driver interface; the particular query depends on the value of the iEsc parameter.
DrvFillPath The DrvFillPath function is an optional entry point to handle the filling of closed paths.
DrvFontManagement The DrvFontManagement function is an optional entry point provided for PostScript devices.
DrvFree The DrvFree function is used to notify the driver that the specified structure is no longer needed.
DrvGetDirectDrawInfo The DrvGetDirectDrawInfo function returns the capabilities of the graphics hardware.
DrvGetGlyphMode The DrvGetGlyphMode function tells GDI how to cache glyph information.
DrvGetModes The DrvGetModes function lists the modes supported by a given device.
DrvGetTrueTypeFile The DrvGetTrueTypeFile function accesses a memory-mapped TrueType font file.
DrvGradientFill The DrvGradientFill function shades the specified primitives.
DrvIcmCheckBitmapBits The DrvIcmCheckBitmapBits function checks whether the pixels in the specified bitmap lie within the device gamut of the specified transform.
DrvIcmCreateColorTransform The DrvIcmCreateColorTransform function creates an ICM color transform.
DrvIcmDeleteColorTransform The DrvIcmDeleteColorTransform function deletes the specified color transform.
DrvIcmSetDeviceGammaRamp The DrvIcmSetDeviceGammaRamp function sets the hardware gamma ramp of the specified display device.
DrvLineTo The DrvLineTo function draws a single, solid, integer-only cosmetic line.
DrvLoadFontFile The DrvLoadFontFile function receives information from GDI relating to loading and mapping font files.
DrvMovePointer The DrvMovePointer function moves the pointer to a new position and ensures that GDI does not interfere with the display of the pointer.
DrvNextBand The DrvNextBand function is called by GDI when it has finished drawing a band for a physical page, so the driver can send the next band to the printer.
DrvNotify The DrvNotify function allows a display driver to be notified about certain information by GDI.
DrvPaint The DrvPaint function is obsolete, and is no longer called by GDI in Windows 2000 and later. New drivers should implement one or more of DrvFillPath, DrvStrokePath, or DrvStrokeAndFillPath.
DrvPlgBlt The DrvPlgBlt function provides rotate bit-block transfer capabilities between combinations of device-managed and GDI-managed surfaces.
DrvQueryAdvanceWidths The DrvQueryAdvanceWidths function returns character advance widths for a specified set of glyphs.
DrvQueryDeviceSupport The DrvQueryDeviceSupport function returns requested device-specific information.
DrvQueryDriverInfo The DrvQueryDriverInfo function returns requested driver-specific information.
DrvQueryFont The DrvQueryFont function is used by GDI to get the IFIMETRICS structure for a given font.
DrvQueryFontCaps The DrvQueryFontCaps function defines the capabilities of the font driver.
DrvQueryFontData The DrvQueryFontData function retrieves information about a realized font.
DrvQueryFontFile The DrvQueryFontFile function provides font file information.
DrvQueryFontTree The DrvQueryFontTree function provides GDI with a pointer to a structure that defines one of the following:A mapping from Unicode to glyph handles, including glyph variantsA mapping of kerning pairs to kerning handles
DrvQueryPerBandInfo A printer graphics DLL's DrvQueryPerBandInfo function is called by GDI before it begins drawing a band for a physical page, so the driver can supply GDI with band-specific information.
DrvQueryTrueTypeOutline The DrvQueryTrueTypeOutline function retrieves glyph outlines in native TrueType format.
DrvQueryTrueTypeTable The DrvQueryTrueTypeTable function accesses specific tables in a TrueType font-description file.
DrvRealizeBrush The DrvRealizeBrush function requests that the driver realize a specified brush for a specified surface.
DrvResetDevice The DrvResetDevice function resets a device that is inoperable or unresponsive.
DrvResetPDEV The DrvResetPDEV function allows a graphics driver to transfer the state of the driver from an old PDEV structure to a new PDEV structure when a Win32 application calls ResetDC.
DrvSaveScreenBits The DrvSaveScreenBits function causes a display driver to save or restore a given rectangle of the displayed image.
DrvSendPage A printer graphics DLL's DrvSendPage function is called by GDI when it has finished drawing a physical page, so the driver can send the page to the printer.
DrvSetPalette The DrvSetPalette function requests that the driver realize the palette for a specified device.
DrvSetPixelFormat The DrvSetPixelFormat function sets the pixel format of a window.
DrvSetPointerShape The DrvSetPointerShape function is used to request the driver to take the pointer off the display, if the driver has drawn it there; to attempt to set a new pointer shape; and to put the new pointer on the display at a specified position.
DrvStartBanding The DrvStartBanding function is called by GDI when it is ready to start sending bands of a physical page to the driver for rendering.
DrvStartDoc The DrvStartDoc function is called by GDI when it is ready to start sending a document to the driver for rendering.
DrvStartPage The DrvStartPage function is called by GDI when it is ready to start sending the contents of a physical page to the driver for rendering.
DrvStretchBlt The DrvStretchBlt function provides stretching bit-block transfer capabilities between any combination of device-managed and GDI-managed surfaces.
DrvStretchBltROP The DrvStretchBltROP function performs a stretching bit-block transfer using a ROP.
DrvStrokeAndFillPath The DrvStrokeAndFillPath function strokes (outlines) and fills a path concurrently.
DrvStrokePath The DrvStrokePath function strokes (outlines) a path.
DrvSwapBuffers The DrvSwapBuffers function displays the contents of the window's associated hidden buffer on the specified surface.
DrvSynchronize The DrvSynchronize function informs the driver that GDI needs to access a device-managed surface. This function allows asynchronous drawing operations performed by a device's coprocessor to be coordinated with GDI accesses.
DrvSynchronizeSurface The DrvSynchronizeSurface function informs the driver that GDI needs to write to the specified surface. This function allows drawing operations performed by a device's coprocessor to be coordinated with GDI.
DrvTextOut The DrvTextOut function is the entry point from GDI that calls for the driver to render a set of glyphs at specified positions.
DrvTransparentBlt The DrvTransparentBlt function provides bit-block transfer capabilities with transparency.
DrvUnloadFontFile The DrvUnloadFontFile function informs a font driver that the specified font file is no longer needed.
EngAcquireSemaphore The EngAcquireSemaphore function acquires the resource associated with the semaphore for exclusive access by the calling thread.
EngAllocMem The EngAllocMem function allocates a block of memory and inserts a caller-supplied tag before the allocation.
EngAllocPrivateUserMem The EngAllocPrivateUserMem function allocates a block of user memory from the address space of a specified process and inserts a caller-supplied tag before the allocation.
EngAllocUserMem The EngAllocUserMem function allocates a block of memory from the address space of the current process and inserts a caller-supplied tag before the allocation.
EngAlphaBlend The EngAlphaBlend function provides bit-block transfer capabilities with alpha blending.
EngAssociateSurface The EngAssociateSurface function marks a given surface as belonging to a specified device.
EngBitBlt The EngBitBlt function provides general bit-block transfer capabilities either between device-managed surfaces, or between a device-managed surface and a GDI-managed standard format bitmap.
EngBugCheckEx The EngBugCheckEx function brings down the system in a controlled manner when the caller discovers an unrecoverable error that would corrupt the system if the caller continued to run.
EngCheckAbort The EngCheckAbort function enables a printer graphics DLL to determine if a print job should be terminated.
EngClearEvent The EngClearEvent function sets a specified event object to the nonsignaled state.
EngComputeGlyphSet The EngComputeGlyphSet function computes the glyph set supported on a device.
EngControlSprites The EngControlSprites function tears down or redraws sprites on the specified WNDOBJ area.
EngCopyBits The EngCopyBits function translates between device-managed raster surfaces and GDI standard-format bitmaps.
EngCreateBitmap The EngCreateBitmap function requests that GDI create and manage a bitmap.
EngCreateClip The EngCreateClip function creates a CLIPOBJ structure that the driver uses in callbacks.
EngCreateDeviceBitmap The EngCreateDeviceBitmap function requests GDI to create a handle for a device bitmap.
EngCreateDeviceSurface The EngCreateDeviceSurface function creates and returns a handle for a device surface that the driver will manage.
EngCreateDriverObj The EngCreateDriverObj function creates a DRIVEROBJ structure.
EngCreateEvent The EngCreateEvent function creates a synchronization event object that can be used to synchronize hardware access between a display driver and the video miniport driver.
EngCreatePalette The EngCreatePalette function sends a request to GDI to create an RGB palette.
EngCreatePath The EngCreatePath function allocates a path for the driver's temporary use.
EngCreateSemaphore The EngCreateSemaphore function creates a semaphore object.
EngCreateWnd The EngCreateWnd function creates a WNDOBJ structure for the window referenced by hwnd.
EngDebugBreak The EngDebugBreak function causes a breakpoint in the current process to occur.
EngDebugPrint The EngDebugPrint function prints the specified debug message to the kernel debugger.
EngDeleteClip The EngDeleteClip function deletes a CLIPOBJ structure allocated by EngCreateClip.
EngDeleteDriverObj The EngDeleteDriverObj function frees the handle used for tracking a device-managed resource.
EngDeleteEvent The EngDeleteEvent function deletes the specified event object.
EngDeleteFile The EngDeleteFile function deletes a file.
EngDeletePalette The EngDeletePalette function sends a request to GDI to delete the specified palette.
EngDeletePath The EngDeletePath function deletes a path previously allocated by EngCreatePath.
EngDeleteSafeSemaphore The EngDeleteSafeSemaphore function removes a reference to the specified safe semaphore.
EngDeleteSemaphore The EngDeleteSemaphore function deletes a semaphore object from the system's resource list.
EngDeleteSurface The EngDeleteSurface function deletes the specified surface.
EngDeleteWnd The EngDeleteWnd function deletes a WNDOBJ structure.
EngDeviceIoControl The EngDeviceIoControl function sends a control code to the specified video miniport driver, causing the device to perform the specified operation.
EngDitherColor The EngDitherColor function returns a standard 8x8 dither that approximates the specified RGB color.
EngEnumForms The EngEnumForms function enumerates the forms supported by the specified printer.
EngEraseSurface The EngEraseSurface function calls GDI to erase the surface; a given rectangle on the surface will be filled with the given color.
EngFillPath The EngFillPath function fills a path.
EngFindImageProcAddress The EngFindImageProcAddress function returns the address of a function within an executable module.
EngFindResource The EngFindResource function determines the location of a resource in a module.
EngFntCacheAlloc The EngFntCacheAlloc function allocates storage for a font that is to be stored in cached memory.
EngFntCacheFault The EngFntCacheFault function reports an error to the font engine if the font driver encountered an error reading from or writing to a font data cache.
EngFntCacheLookUp The EngFntCacheLookUp function retrieves the address of cached font file data.
EngFreeMem The EngFreeMem function deallocates a block of system memory.
EngFreeModule The EngFreeModule function unmaps a file from system memory.
EngFreePrivateUserMem The EngFreePrivateUserMem function deallocates a block of private user memory.
EngFreeUserMem The EngFreeUserMem function deallocates a block of user memory.
EngGetCurrentCodePage The EngGetCurrentCodePage function returns the system's default OEM and ANSI code pages.
EngGetCurrentProcessId The EngGetCurrentProcessId function identifies an application's current process.
EngGetCurrentThreadId The EngGetCurrentThreadId function identifies an application's current thread.
EngGetDriverName The EngGetDriverName function returns the name of the driver's DLL.
EngGetFileChangeTime The EngGetFileChangeTime function retrieves a file's last write time.
EngGetFilePath The EngGetFilePath function determines the file path associated with the specified font file.
EngGetForm The EngGetForm function gets the FORM_INFO_1 details for the specified form.
EngGetLastError The EngGetLastError function returns the last error code logged by GDI for the calling thread.
EngGetPrinter The EngGetPrinter function retrieves information about the specified printer.
EngGetPrinterData The EngGetPrinterData function retrieves configuration data for the specified printer.
EngGetPrinterDataFileName The EngGetPrinterDataFileName function retrieves the string name of the printer's data file.
EngGetPrinterDriver The EngGetPrinterDriver function retrieves driver data for the specified printer.
EngGetProcessHandle The EngGetProcessHandle function retrieves a handle to the current client process.
EngGetType1FontList The EngGetType1FontList function retrieves a list of PostScript Type 1 fonts that are installed both locally and remotely.
EngGradientFill The EngGradientFill function shades the specified primitives.
EngHangNotification The EngHangNotification function notifies the system that a specified device is inoperable or unresponsive.
EngInitializeSafeSemaphore The EngInitializeSafeSemaphore function initializes the specified safe semaphore.
EngIsSemaphoreOwned The EngIsSemaphoreOwned function determines whether any thread holds the specified semaphore.
EngIsSemaphoreOwnedByCurrentThread The EngIsSemaphoreOwnedByCurrentThread function determines whether the currently executing thread holds the specified semaphore.
EngLineTo The EngLineTo function draws a single, solid, integer-only cosmetic line.
EngLoadImage The EngLoadImage function loads the specified executable image into kernel-mode memory.
EngLoadModule The EngLoadModule function loads the specified data module into system memory for reading.
EngLoadModuleForWrite The EngLoadModuleForWrite function loads the specified executable module into system memory for writing.
EngLockDirectDrawSurface The EngLockDirectDrawSurface function locks the kernel-mode handle of a DirectDraw surface.
EngLockDriverObj The EngLockDriverObj function creates an exclusive lock on this object for the calling thread.
EngLockSurface The EngLockSurface function creates a user object for a given surface. This function gives drivers access to surfaces they create.
EngLpkInstalled The EngLpkInstalled function determines whether the language pack is installed on the system.
EngMapEvent The EngMapEvent function maps a user-mode event object to kernel mode.
EngMapFile The EngMapFile function creates or opens a file and maps it into system space.
EngMapFontFile The EngMapFontFile function is obsolete. Use EngMapFontFileFD instead.
EngMapFontFileFD The EngMapFontFileFD function maps a font file into system memory, if necessary, and returns a pointer to the base location of the font data in the file.
EngMapModule The EngMapModule function returns the address and size of a file that was loaded by EngLoadModule, EngLoadModuleForWrite, EngLoadImage, or EngMapFile.
EngMarkBandingSurface The EngMarkBandingSurface function marks the specified surface as a banding surface.
EngModifySurface The EngModifySurface function notifies GDI about the attributes of a surface that was created by the driver.
EngMovePointer The EngMovePointer function moves the engine-managed pointer on the device.
EngMulDiv The EngMulDiv function multiplies two 32-bit values and then divides the 64-bit result by a third 32-bit value.
EngMultiByteToUnicodeN The EngMultiByteToUnicodeN function converts the specified ANSI source string into a Unicode string using the current ANSI code page.
EngMultiByteToWideChar The EngMultiByteToWideChar function converts an ANSI source string into a wide character string using the specified code page.
EngPaint The EngPaint function causes GDI to paint a specified region.
EngPlgBlt The EngPlgBlt function causes GDI to perform a rotate bit-block transfer.
EngProbeForRead The EngProbeForRead function probes a structure for read accessibility.
EngProbeForReadAndWrite The EngProbeForReadAndWrite function probes a structure for read and write accessibility.
EngQueryDeviceAttribute The EngQueryDeviceAttribute function allows the driver to query the system about particular attributes of the device.
EngQueryFileTimeStamp The EngQueryFileTimeStamp function returns the time stamp of a file.
EngQueryLocalTime The EngQueryLocalTime function queries the local time.
EngQueryPalette The EngQueryPalette function queries the specified palette for its attributes.
EngQueryPerformanceCounter The EngQueryPerformanceCounter function queries the performance counter.
EngQueryPerformanceFrequency The EngQueryPerformanceFrequency function queries the frequency of the performance counter.
EngQuerySystemAttribute The EngQuerySystemAttribute function queries processor-specific or system-specific capabilities.
EngReadStateEvent The EngReadStateEvent function returns the current state of the specified event object:_signaled or nonsignaled.
EngReleaseSemaphore The EngReleaseSemaphore function releases the specified semaphore.
EngRestoreFloatingPointState The EngRestoreFloatingPointState function restores the Windows 2000 (and later) kernel floating-point state after the driver uses any floating-point or MMX hardware instructions.
EngSaveFloatingPointState The EngSaveFloatingPointState function saves the current Windows 2000 (and later) kernel floating-point state.
EngSecureMem The EngSecureMem function locks down the specified address range in memory.
EngSetEvent The EngSetEvent function sets the specified event object to the signaled state, and returns the event object's previous state.
EngSetLastError The EngSetLastError function causes GDI to report an error code, which can be retrieved by an application.
EngSetPointerShape The EngSetPointerShape function sets the pointer shape for the calling driver.
EngSetPointerTag The EngSetPointerTag function is obsolete for Windows 2000 and later operating system versions.
EngSetPrinterData The EngSetPrinterData function is obsolete in Windows 2000 and later. In earlier versions of Windows EngSetPrinterData sets the configuration data for the specified printer.
EngSort The EngSort function performs a quick-sort on the specified list.
EngStretchBlt The EngStretchBlt function causes GDI to do a stretching bit-block transfer.
EngStretchBltROP The EngStretchBltROP function performs a stretching bit-block transfer using a ROP.
EngStrokeAndFillPath The EngStrokeAndFillPath function causes GDI to fill a path and stroke it at the same time.
EngStrokePath The EngStrokePath function requests that GDI stroke a specified path.
EngTextOut The EngTextOut function causes GDI to render a set of glyphs at specified positions.
EngTransparentBlt The EngTransparentBlt function provides bit-block transfer capabilities with transparency.
EngUnicodeToMultiByteN The EngUnicodeToMultiByteN function converts the specified Unicode string into an ANSI string using the current ANSI code page.
EngUnloadImage The EngUnloadImage function unloads an image loaded by EngLoadImage.
EngUnlockDirectDrawSurface The EngUnlockDirectDrawSurface function releases the lock on the specified surface.
EngUnlockDriverObj The EngUnlockDriverObj function causes GDI to unlock the driver object.
EngUnlockSurface The EngUnlockSurface function causes GDI to unlock the surface.
EngUnmapEvent The EngUnmapEvent function cleans up the kernel-mode resources allocated for a mapped user-mode event.
EngUnmapFile The EngUnmapFile function unmaps the view of a file from system space.
EngUnmapFontFile The EngUnmapFontFile function is obsolete. Use EngUnmapFontFileFD instead.
EngUnmapFontFileFD The EngUnmapFontFileFD function unmaps the specified font file from system memory.
EngUnsecureMem The EngUnsecureMem function unlocks an address range that is locked down in memory.
EngWaitForSingleObject The EngWaitForSingleObject function puts the current thread of the display driver into a wait state until the specified event object is set to the signaled state, or until the wait times out.
EngWideCharToMultiByte The EngWideCharToMultiByte function converts a wide character string into an ANSI source string using the specified code page.
EngWritePrinter The EngWritePrinter function allows printer graphics DLLs to send a data stream to printer hardware.
FLOATOBJ_Add The FLOATOBJ_Add function adds the two FLOATOBJs, and returns with the result in the first parameter.
FLOATOBJ_AddFloat The FLOATOBJ_AddFloat function adds the value of type FLOATL to the FLOATOBJ, and returns with the result in the first parameter.
FLOATOBJ_AddLong The FLOATOBJ_AddLong function adds the value of type LONG to the FLOATOBJ, and returns with the result in the first parameter.
FLOATOBJ_Div The FLOATOBJ_Div function divides the two FLOATOBJs, and returns with the result in the first parameter.
FLOATOBJ_DivFloat The FLOATOBJ_DivFloat function divides the FLOATOBJ by the value of type FLOATL, and returns with the result in the first parameter.
FLOATOBJ_DivLong The FLOATOBJ_DivLong function divides the FLOATOBJ by the value of type LONG, and returns with the result in the first parameter.
FLOATOBJ_Equal The FLOATOBJ_Equal function determines whether the two FLOATOBJs are equal.
FLOATOBJ_EqualLong The FLOATOBJ_EqualLong function determines whether the FLOATOBJ and the value of type LONG are equal.
FLOATOBJ_GetFloat The FLOATOBJ_GetFloat function calculates and returns the FLOAT-equivalent value of the specified FLOATOBJ.
FLOATOBJ_GetLong The FLOATOBJ_GetLong function calculates and returns the LONG-equivalent value of the specified FLOATOBJ.
FLOATOBJ_GreaterThan The FLOATOBJ_GreaterThan function determines whether the first FLOATOBJ is greater than the second FLOATOBJ.
FLOATOBJ_GreaterThanLong The FLOATOBJ_GreaterThanLong function determines whether the FLOATOBJ is greater than the value of type LONG.
FLOATOBJ_LessThan The FLOATOBJ_LessThan function determines whether the first FLOATOBJ is less than the second FLOATOBJ.
FLOATOBJ_LessThanLong The FLOATOBJ_LessThanLong function determines whether the FLOATOBJ is less than the value of type LONG.
FLOATOBJ_Mul The FLOATOBJ_Mul function multiplies the two FLOATOBJs, and returns with the result in the first parameter.
FLOATOBJ_MulFloat The FLOATOBJ_MulFloat function multiplies the FLOATOBJ by the value of type FLOATL, and returns with the result in the first parameter.
FLOATOBJ_MulLong The FLOATOBJ_MulLong function multiplies the FLOATOBJ by the value of type LONG, and returns with the result in the first parameter.
FLOATOBJ_Neg The FLOATOBJ_Neg function negates the FLOATOBJ.
FLOATOBJ_SetFloat The FLOATOBJ_SetFloat function assigns the value of type FLOATL to the FLOATOBJ.
FLOATOBJ_SetLong The FLOATOBJ_SetLong function assigns the value of type LONG to the FLOATOBJ.
FLOATOBJ_Sub The FLOATOBJ_Sub function subtracts the second FLOATOBJ from the first, and returns with the result in the first parameter.
FLOATOBJ_SubFloat The FLOATOBJ_SubFloat function subtracts the value of type FLOATL from the FLOATOBJ, and returns with the result in the first parameter.
FLOATOBJ_SubLong The FLOATOBJ_SubLong function subtracts the value of type LONG from the FLOATOBJ, and returns with the result in the first parameter.
FONTOBJ_cGetAllGlyphHandles The FONTOBJ_cGetAllGlyphHandles function allows the device driver to find every glyph handle of a GDI font.
FONTOBJ_cGetGlyphs The FONTOBJ_cGetGlyphs function is a service to the font consumer that translates glyph handles into pointers to glyph data, which are valid until the next call to FONTOBJ_cGetGlyphs.
FONTOBJ_pfdg The FONTOBJ_pfdg function retrieves the pointer to the FD_GLYPHSET structure associated with the specified font.
FONTOBJ_pifi The FONTOBJ_pifi function retrieves the pointer to the IFIMETRICS structure associated with a specified font.
FONTOBJ_pjOpenTypeTablePointer The FONTOBJ_pjOpenTypeTablePointer function returns a pointer to a view of an OpenType table.
FONTOBJ_pQueryGlyphAttrs The FONTOBJ_pQueryGlyphAttrs function returns information about a font's glyphs.
FONTOBJ_pvTrueTypeFontFile The FONTOBJ_pvTrueTypeFontFile function retrieves a user-mode pointer to a view of a TrueType, OpenType, or Type1 font file.
FONTOBJ_pwszFontFilePaths The FONTOBJ_pwszFontFilePaths function retrieves the file path(s) associated with a font.
FONTOBJ_pxoGetXform The FONTOBJ_pxoGetXform function retrieves the notional-to-device transform for the specified font.
FONTOBJ_vGetInfo The FONTOBJ_vGetInfo function retrieves information about an associated font.
HT_ComputeRGBGammaTable The HT_ComputeRGBGammaTable function causes GDI to compute device red, green, and blue intensities based on gamma numbers.
HT_Get8BPPFormatPalette The HT_Get8BPPFormatPalette function returns a halftone palette for use on standard 8-bits per pixel device types.
HT_Get8BPPMaskPalette The HT_Get8BPPMaskPalette function returns a mask palette for an 8-bits-per-pixel device type.
HTUI_DeviceColorAdjustment The HTUI_DeviceColorAdjustment function can be used by graphics device drivers to display a dialog box that allows a user to adjust a device's halftoning properties.
IsEqualGUID The IsEqualGUID macro (winddi.h) determines whether two GUIDs are equal.
PALOBJ_cGetColors The PALOBJ_cGetColors function copies RGB colors from an indexed palette.
PATHOBJ_bCloseFigure The PATHOBJ_bCloseFigure function closes an open figure in a path by drawing a line from the current position to the first point of the figure.
PATHOBJ_bEnum The PATHOBJ_bEnum function retrieves the next PATHDATA record from a specified path and enumerates the curves in the path.
PATHOBJ_bEnumClipLines The PATHOBJ_bEnumClipLines function enumerates clipped line segments from a given path.
PATHOBJ_bMoveTo The PATHOBJ_bMoveTo function sets the current position in a given path.
PATHOBJ_bPolyBezierTo The PATHOBJ_bPolyBezierTo function draws Bezier curves on a path.
PATHOBJ_bPolyLineTo The PATHOBJ_bPolyLineTo function draws lines from the current position in a path through the specified points.
PATHOBJ_vEnumStart The PATHOBJ_vEnumStart function notifies a given PATHOBJ structure that the driver will be calling PATHOBJ_bEnum to enumerate lines and/or curves in the path.
PATHOBJ_vEnumStartClipLines The PATHOBJ_vEnumStartClipLines function allows the driver to request lines to be clipped against a specified clip region.
PATHOBJ_vGetBounds The PATHOBJ_vGetBounds function retrieves the bounding rectangle for the specified path.
STROBJ_bEnum The STROBJ_bEnum function enumerates glyph identities and positions.
STROBJ_bEnumPositionsOnly The STROBJ_bEnumPositionsOnly function enumerates glyph identities and positions for a specified text string, but does not create cached glyph bitmaps.
STROBJ_bGetAdvanceWidths The STROBJ_bGetAdvanceWidths function retrieves an array of vectors specifying the probable widths of glyphs making up a specified string.
STROBJ_dwGetCodePage The STROBJ_dwGetCodePage function returns the code page associated with the specified STROBJ structure.
STROBJ_fxBreakExtra The STROBJ_fxBreakExtra function retrieves the amount of extra space to be added to each space character in a string when displaying and/or printing justified text.
STROBJ_fxCharacterExtra The STROBJ_fxCharacterExtra function retrieves the amount of extra space with which to augment each character's width in a string when displaying and/or printing it.
STROBJ_vEnumStart The STROBJ_vEnumStart function defines the form, or type, for data that will be returned from GDI in subsequent calls to STROBJ_bEnum.
WNDOBJ_bEnum The WNDOBJ_bEnum function obtains a batch of rectangles from the visible region of a window.
WNDOBJ_cEnumStart The WNDOBJ_cEnumStart function is a callback function that sets parameters for enumeration of rectangles in the visible region of a window.
WNDOBJ_vSetConsumer The WNDOBJ_vSetConsumer function sets a driver-defined value in the pvConsumer field of the specified WNDOBJ structure.
XFORMOBJ_bApplyXform The XFORMOBJ_bApplyXform function applies the given transform or its inverse to the given array of points.
XFORMOBJ_iGetFloatObjXform The XFORMOBJ_iGetFloatObjXform function downloads a FLOATOBJ transform to the driver.
XFORMOBJ_iGetXform The XFORMOBJ_iGetXform function downloads a transform to the driver.
XLATEOBJ_cGetPalette The XLATEOBJ_cGetPalette function retrieves RGB colors or the bitfields format from the specified palette.
XLATEOBJ_hGetColorTransform The XLATEOBJ_hGetColorTransform function returns the color transform for the specified translation object.
XLATEOBJ_iXlate The XLATEOBJ_iXlate function translates a color index of the source palette to the closest index in the destination palette.
XLATEOBJ_piVector The XLATEOBJ_piVector function retrieves a translation vector that the driver can use to translate source indices to destination indices.

Callback functions

PFN_DrvQueryGlyphAttrs The DrvQueryGlyphAttrs function returns information about a font's glyphs.
WNDOBJCHANGEPROC The WNDOBJCHANGEPROC function is a driver-defined callback function that GDI uses to notify the driver of changes to the window in question.

Structures

BLENDOBJ The BLENDOBJ structure controls blending by specifying the blending functions for source and destination bitmaps.
BRUSHOBJ The BRUSHOBJ structure contains three public members that describe a brush object.
CIECHROMA The CIECHROMA structure is used to describe the chromaticity coordinates, x and y, and the luminance, Y in CIE color space.
CLIPLINE The CLIPLINE structure gives the driver access to a portion of a line between two clip regions used for drawing.
CLIPOBJ The CLIPOBJ structure describes the clip region used when drawing.
COLORINFO The COLORINFO structure defines a device's colors in CIE coordinate space.
DEVHTADJDATA The DEVHTADJDATA structure is used as input to the HTUI_DeviceColorAdjustment function.
DEVHTINFO The DEVHTINFO structure is used as input to the HTUI_DeviceColorAdjustment function.
DEVINFO The DEVINFO structure provides information about the driver and its private PDEV to the graphics engine.
DRIVEROBJ The DRIVEROBJ structure is used to track a resource, allocated by a driver, that requires use GDI services.
DRVENABLEDATA The DRVENABLEDATA structure contains a pointer to an array of DRVFN structures and the graphics DDI version number of an NT-based operating system.
DRVFN The DRVFN structure is used by graphics drivers to provide GDI with pointers to the graphics DDI functions defined by the driver.
ENG_TIME_FIELDS The ENG_TIME_FIELDS structure is used by the EngQueryLocalTime function to return the local time.
ENGSAFESEMAPHORE The ENGSAFESEMAPHORE structure provides the driver with a thread-safe semaphore.
ENUMRECTS The ENUMRECTS structure is used by the CLIPOBJ_cEnumStart function to provide information about rectangles in a clip region for the CLIPOBJ_bEnum function.
FD_DEVICEMETRICS The FD_DEVICEMETRICS structure is used to provide device-specific font information to GDI if the iMode parameter of the driver-supplied DrvQueryFontData function is QFD_MAXEXTENTS.
FD_GLYPHATTR The FD_GLYPHATTR structure is used to specify the return value for the FONTOBJ_pQueryGlyphAttrs and DrvQueryGlyphAttrs functions.
FD_GLYPHSET The FD_GLYPHSET structure is used to define the mappings from Unicode characters to glyph handles.
FD_KERNINGPAIR The FD_KERNINGPAIR structure is used to store information about kerning pairs.
FD_XFORM The FD_XFORM structure describes an arbitrary two-dimensional font transform.
FLOATOBJ The FLOATOBJ structure is used to emulate a floating-point number.
FLOATOBJ_XFORM The FLOATOBJ_XFORM structure describes an arbitrary linear two-dimensional transform, such as for geometric wide lines. (FLOATOBJ_XFORM)
FONTDIFF The FONTDIFF structure describes all of the characteristics that are different between a base font and one of its simulations.
FONTINFO The FONTINFO structure contains information regarding a specific font.
FONTOBJ The FONTOBJ structure is used to give a driver access to information about a particular instance of a font.
FONTSIM The FONTSIM structure contains offsets to one or more FONTDIFF structures describing bold, italic, and bold italic font simulations.
GAMMARAMP The GAMMARAMP structure is used by DrvIcmSetDeviceGammaRamp to set the hardware gamma ramp of a particular display device.
GDIINFO The GDIINFO structure describes the graphics capabilities of a given device.
GLYPHBITS The GLYPHBITS structure is used to define a glyph bitmap.
GLYPHDATA The GLYPHDATA structure contains information about an individual glyph.
GLYPHDEF The GLYPHDEF union identifies individual glyphs and provides either a pointer to a GLYPHBITS structure or a pointer to a PATHOBJ structure.
GLYPHPOS The GLYPHPOS structure is used by GDI to provide a graphics driver with a glyph's description and position.
IFIEXTRA The IFIEXTRA structure defines additional information for a given typeface that GDI can use.
IFIMETRICS The IFIMETRICS structure defines information for a given typeface that GDI can use.
LINEATTRS The LINEATTRS structure is used by a driver's line-drawing functions to determine line attributes.
PALOBJ The PALOBJ structure is a user object that represents an indexed color palette.
PATHDATA The PATHDATA structure describes all or part of a subpath.
PATHOBJ The PATHOBJ structure is used to describe a set of lines and Bezier curves that are to be stroked or filled.
PERBANDINFO The PERBANDINFO structure is used as input to a printer graphics DLL's DrvQueryPerBandInfo function.
RUN The RUN structure is used to describe a linear set of pixels that is not clipped by the CLIPLINE structure.
STROBJ The STROBJ class, or text string object, contains an enumeration of glyph handles and positions for the device driver.
SURFOBJ The SURFOBJ structure is the user object for a surface. A device driver usually calls methods on a surface object only when the surface object represents a GDI bitmap or a device-managed surface.
TYPE1_FONT The TYPE1_FONT structure contains the information necessary for a PostScript driver to access a Type1 font through GDI.
WCRUN The WCRUN structure describes a run of Unicode characters.
WNDOBJ The WNDOBJ structure allows the driver to keep track of the position, size, and visible client region changes of a window.
XFORML The FLOATOBJ_XFORM structure describes an arbitrary linear two-dimensional transform, such as for geometric wide lines.F
XFORMOBJ The XFORMOBJ structure describes an arbitrary linear two-dimensional transform, such as for geometric wide lines.
XLATEOBJ The XLATEOBJ structure is used to translate color indexes from one palette to another.