GetDlgCtrlID function

Retrieves the identifier of the specified control.

Syntax

int GetDlgCtrlID(
  HWND hWnd
);

Parameters

hWnd

Type: HWND

A handle to the control.

Return Value

Type: int

If the function succeeds, the return value is the identifier of the control.

If the function fails, the return value is zero. An invalid value for the hwndCtl parameter, for example, will cause the function to fail. To get extended error information, call GetLastError.

Remarks

GetDlgCtrlID accepts child window handles as well as handles of controls in dialog boxes. An application sets the identifier for a child window when it creates the window by assigning the identifier value to the hmenu parameter when calling the CreateWindow or CreateWindowEx function.

Although GetDlgCtrlID may return a value if hwndCtl is a handle to a top-level window, top-level windows cannot have identifiers and such a return value is never valid.

Examples

For an example, see Initializing a Dialog Box.

Requirements

   
Windows version Windows 2000 Professional [desktop apps only] Windows 2000 Server [desktop apps only]
Target Platform Windows
Header winuser.h (include Windows.h)
Library User32.lib
DLL User32.dll

See Also

Conceptual

CreateWindow

CreateWindowEx

Dialog Boxes

GetDlgItem

Reference