DirectDrawEnumerateEx (Windows CE 5.0)

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

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.
    DDENUM_NONDISPLAYDEVICES Enumerates the primary device and nondisplay devices, such as 3-D accelerators that have no 2-D capabilities.

Return Values

If the function succeeds, the return value is DD_OK.

If the function fails, the return value is DDERR_INVALIDPARAMS

Remarks

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

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

The W version of this function in Windows CE provides Unicode support.

Requirements

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Ddraw.h.
Link Library: Ddraw.lib.

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