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DirectDrawEnumerateEx (Compact 2013)

  • Article

3/26/2014

This function enumerates all DirectDraw devices installed on the system. The NULL entry always identifies the primary display device shared with GDI.

Syntax

HRESULT WINAPI DirectDrawEnumerateEx(
  LPDDENUMCALLBACKEX lpCallback, 
  LPVOID lpContext, 
  DWORD dwFlags
);

Parameters

  • lpCallback
    [in] Address of a DDEnumCallbackEx function that will be called with a description of each enumerated DirectDraw-enabled HAL.
  • lpContext
    [in] Address of an application-defined value that will be passed to the enumeration callback function each time it is called.

  • dwFlags
    [in] Flags specifying the enumeration scope. This parameter can be zero or a combination of the following flags. If the value is zero, the function will enumerate only the primary display device.

    Flag

    Description

    DDENUM_ATTACHEDSECONDARYDEVICES

    Enumerates the primary device and any display devices attached to the desktop.

    DDENUM_DETACHEDSECONDARYDEVICES

    Enumerates the primary device and any display devices not attached to the desktop.

Return Value

If the function succeeds, the return value is DD_OK.

If the function fails, the return value is the error value:

DDERR_INVALIDPARAMS

For more information on this error code see DirectDraw Return Values.

Remarks

Retrieve the DirectDrawEnumerateEx function's address from Ddraw.dll by calling the GetProcAddress Win32® function with the DirectDrawEnumerateEx (Unicode) process name strings.

If GetProcAddress fails, the installed version of the OS does not support multiple monitors.

Requirements

Header

ddraw.h

Library

ddraw.lib

See Also

Reference

DirectDraw Functions
DirectDraw Reference

Other Resources

GetProcAddress