DirectDrawEnumerateEx

Artigo
11/18/2015

A version of this page is also available for

4/8/2010

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 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
Windows Embedded CE	Windows Embedded CE 6.0 and later
Windows Mobile	Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later

Compartilhar via