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GetWindowThreadProcessId function
Retrieves the identifier of the thread that created the specified window and, optionally, the identifier of the process that created the window.
Syntax
DWORD WINAPI GetWindowThreadProcessId( _In_ HWND hWnd, _Out_opt_ LPDWORD lpdwProcessId );
Parameters
- hWnd [in]
-
Type: HWND
A handle to the window.
- lpdwProcessId [out, optional]
-
Type: LPDWORD
A pointer to a variable that receives the process identifier. If this parameter is not NULL, GetWindowThreadProcessId copies the identifier of the process to the variable; otherwise, it does not.
Return value
Type: Type: DWORD
The return value is the identifier of the thread that created the window.
Requirements
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Minimum supported client |
Windows 2000 Professional [desktop apps only] |
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Minimum supported server |
Windows 2000 Server [desktop apps only] |
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Header |
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Library |
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DLL |
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See also
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