GetGuiResources function

Retrieves the count of handles to graphical user interface (GUI) objects in use by the specified process.

Syntax


DWORD WINAPI GetGuiResources(
  _In_ HANDLE hProcess,
  _In_ DWORD  uiFlags
);

Parameters

hProcess [in]

A handle to the process. The handle must have the PROCESS_QUERY_INFORMATION access right. For more information, see Process Security and Access Rights.

uiFlags [in]

The GUI object type. This parameter can be one of the following values.

Value	Meaning
GR_GDIOBJECTS 0	Return the count of GDI objects.
GR_GDIOBJECTS_PEAK 2	Return the peak count of GDI objects. Windows Server 2008, Windows Vista, Windows Server 2003 and Windows XP: This value is not supported until Windows 7 and Windows Server 2008 R2.
GR_USEROBJECTS 1	Return the count of USER objects.
GR_USEROBJECTS_PEAK 4	Return the peak count of USER objects. Windows Server 2008, Windows Vista, Windows Server 2003 and Windows XP: This value is not supported until Windows 7 and Windows Server 2008 R2.

Return value

If the function succeeds, the return value is the count of handles to GUI objects in use by the process. If no GUI objects are in use, the return value is zero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

A process without a graphical user interface does not use GUI resources, therefore, GetGuiResources will return zero.

Requirements

Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	Winuser.h (include Windows.h)
Library	User32.lib
DLL	User32.dll