Windows Data Types (Windows CE 5.0)
The data types supported by Microsoft® Windows® CE are used to define function return values, function and message parameters, and structure members. They define the size and meaning of these elements.
The following table contains the following types: character, integer, Boolean, pointer, and handle. The character, integer, and Boolean types are common to most C compilers. Most of the pointer-type names begin with a prefix of P or LP. Handles refer to a resource that has been loaded into memory.
| Data Type | Description |
|---|---|
| ATOM | Atom. For more information, see Using Atoms. |
| BOOL | Boolean variable (should be TRUE or FALSE). |
| BOOLEAN | Boolean variable (should be TRUE or FALSE). |
| BYTE | Byte (8 bits). |
| CALLBACK | Calling convention for callback functions. |
| CHAR | 8-bit Windows (ANSI) character. |
| COLORREF | Red, green, blue (RGB) color value (32 bits). For more information, see COLORREF. |
| CONST | Variable whose value is to remain constant during execution. |
| CRITICAL_SECTION | Critical-section object. For more information, see Critical Section Objects. |
| DWORD | 32-bit unsigned integer. |
| DWORD_PTR | Unsigned long type for pointer precision. Use when casting a pointer to a long type to perform pointer arithmetic. |
| DWORD32 | 32-bit unsigned integer. |
| DWORD64 | 64-bit unsigned integer. |
| FLOAT | Floating-point variable. |
| HACCEL | Handle to an accelerator table. |
| HANDLE | Handle to an object. |
| HBITMAP | Handle to a bitmap. |
| HBRUSH | Handle to a brush. |
| HCONV | Not supported. |
| HCONVLIST | Not supported. |
| HCURSOR | Handle to a cursor. |
| HDC | Handle to a device context (DC). |
| HDDEDATA | Not supported. |
| HDESK | Not supported. |
| HDROP | Handle to an internal drop structure. |
| HDWP | Handle to a deferred window position structure. |
| HENHMETAFILE | Not supported. |
| HFILE | Handle to a file opened by OpenFile, not CreateFile. |
| HFONT | Handle to a font. |
| HGDIOBJ | Handle to a GDI object. |
| HGLOBAL | Handle to a global memory block. |
| HHOOK | Handle to a hook. |
| HICON | Handle to an icon. |
| HIMAGELIST | Handle to an image list. |
| HIMC | Handle to input context. |
| HINSTANCE | Handle to an instance. |
| HKEY | Handle to a registry key. |
| HKL | Input locale identifier. |
| HLOCAL | Handle to a local memory block. |
| HMENU | Handle to a menu. |
| HMETAFILE | Not supported. |
| HMODULE | Handle to a module. The value is the base address of the module. |
| HMONITOR | Handle to a display monitor. |
| HPALETTE | Handle to a palette. |
| HPEN | Handle to a pen. |
| HRGN | Handle to a region. |
| HRSRC | Handle to a resource. |
| HSZ | Handle to a DDE string. |
| HWINSTA | Handle to a window station. |
| HWND | Handle to a window. |
| INT | 32-bit signed integer. |
| INT_PTR | Signed integral type for pointer precision. Use when casting a pointer to an integer to perform pointer arithmetic. |
| INT32 | 32-bit signed integer. |
| INT64 | 64-bit signed integer. |
| LANGID | Language identifier. For more information, see Locale Identifiers. |
| LCID | Locale identifier. For more information, see Locale Identifiers. |
| LCTYPE | Locale information type. For more information, see LCTYPE Constants. |
| LONG | 32-bit signed integer. |
| LONG_PTR | Signed long type for pointer precision. Use when casting a pointer to a long to perform pointer arithmetic. |
| LONG32 | 32-bit signed integer. |
| LONG64 | 64-bit signed integer. |
| LONGLONG | 64-bit signed integer. |
| LPARAM | Message parameter. |
| LPBOOL | Pointer to a BOOL. |
| LPBYTE | Pointer to a BYTE. |
| LPCOLORREF | Pointer to a COLORREF value. |
| LPCRITICAL_SECTION | Pointer to a CRITICAL_SECTION. |
| LPCSTR | Pointer to a constant null-terminated string of 8-bit Windows (ANSI) characters. |
| LPCTSTR | An LPCWSTR because Windows CE only uses Unicode. |
| LPCVOID | Pointer to a constant of any type. |
| LPCWSTR | Pointer to a constant null-terminated string of 16-bit Unicode characters. |
| LPDWORD | Pointer to a DWORD. |
| LPHANDLE | Pointer to a HANDLE. |
| LPINT | Pointer to an INT. |
| LPLONG | Pointer to a LONG. |
| LPSTR | Pointer to a null-terminated string of 8-bit Windows (ANSI) characters. |
| LPTSTR | An LPWSTR because Windows CE only uses Unicode. |
| LPVOID | Pointer to any type. |
| LPWORD | Pointer to a WORD. |
| LPWSTR | Pointer to a null-terminated string of 16-bit Unicode characters. |
| LRESULT | Signed result of message processing. |
| LUID | Locally unique identifier. |
| PBOOL | Pointer to a BOOL. |
| PBOOLEAN | Pointer to a BOOL. |
| PBYTE | Pointer to a BYTE. |
| PCHAR | Pointer to a CHAR. |
| PCRITICAL_SECTION | Pointer to a CRITICAL_SECTION. |
| PCSTR | Pointer to a constant null-terminated string of 8-bit Windows (ANSI) characters. |
| PCTSTR | A PCWSTR because Windows CE only uses Unicode. |
| PCWCH | Pointer to a constant WCHAR. |
| PCWSTR | Pointer to a constant null-terminated string of 16-bit Unicode characters. |
| PCWSTR | Pointer to a constant null-terminated string of 16-bit Unicode characters. |
| PDWORD | Pointer to a DWORD. |
| PDWORD | Pointer to a DWORD. |
| PFLOAT | Pointer to a FLOAT. |
| PHANDLE | Pointer to a HANDLE. |
| PHKEY | Pointer to an HKEY. |
| PINT | Pointer to an INT. |
| PLCID | Pointer to an LCID. |
| PLONG | Pointer to a LONG. |
| PLUID | Pointer to a LUID. |
| POINTER_32 | 32-bit pointer. |
| POINTER_64 | 64-bit pointer. This is a sign-extended 32-bit pointer. |
| PSHORT | Pointer to a SHORT. |
| PSTR | Pointer to a null-terminated string of 8-bit Windows (ANSI) characters. |
| PTBYTE | Pointer to a TBYTE. |
| PTCHAR | Pointer to a TCHAR. |
| PTSTR | A PWSTR because Windows CE only uses Unicode. |
| PUCHAR | Pointer to a UCHAR. |
| PUINT | Pointer to a UINT. |
| PULONG | Pointer to a ULONG. |
| PUSHORT | Pointer to a USHORT. |
| PVOID | Pointer to any type. |
| PWCHAR | Pointer to a WCHAR. |
| PWORD | Pointer to a WORD. |
| PWSTR | Pointer to a null-terminated string of 16-bit Unicode characters. |
| REGSAM | Not supported. |
| SC_HANDLE | Handle to a service control manager database. |
| SC_LOCK | Handle to a service control manager database lock. |
| SERVICE_STATUS_HANDLE | Handle to a service status value. |
| SHORT | Short integer (16 bits). |
| SIZE_T | The maximum number of bytes to which a pointer can point. Use for a count that must span the full range of a pointer. |
| SSIZE_T | Signed SIZE_T. |
| TBYTE | A WCHAR because Windows CE only uses Unicode. |
| TCHAR | A WCHAR because Windows CE only uses Unicode. |
| UCHAR | Unsigned CHAR. |
| UINT | Unsigned INT. |
| UINT_PTR | Unsigned INT_PTR. |
| UINT32 | Unsigned INT32. |
| UINT64 | Unsigned INT64. |
| ULONG | Unsigned LONG. |
| ULONG_PTR | Unsigned LONG_PTR. |
| ULONG32 | Unsigned LONG32. |
| ULONG64 | Unsigned LONG64. |
| ULONGLONG | 64-bit unsigned integer. |
| UNSIGNED | Unsigned attribute. |
| USHORT | Unsigned SHORT. |
| VOID | Any type. |
| WCHAR | 16-bit Unicode character. |
| WINAPI | Calling convention for system functions. |
| WORD | 16-bit unsigned integer. |
| WPARAM | Message parameter. |
See Also
Send Feedback on this topic to the authors