GetDlgItem function (winuser.h)

Retrieves a handle to a control in the specified dialog box.

Syntax

HWND GetDlgItem(
  [in, optional] HWND hDlg,
  [in]           int  nIDDlgItem
);

Parameters

[in, optional] hDlg

Type: HWND

A handle to the dialog box that contains the control.

[in] nIDDlgItem

Type: int

The identifier of the control to be retrieved.

Return value

Type: HWND

If the function succeeds, the return value is the window handle of the specified control.

If the function fails, the return value is NULL, indicating an invalid dialog box handle or a nonexistent control. To get extended error information, call GetLastError.

Remarks

You can use the GetDlgItem function with any parent-child window pair, not just with dialog boxes. As long as the hDlg parameter specifies a parent window and the child window has a unique identifier (as specified by the hMenu parameter in the CreateWindow or CreateWindowEx function that created the child window), GetDlgItem returns a valid handle to the child window.

Examples

For an example, see Initializing a Dialog Box.

Requirements

See also

Conceptual

CreateWindow

CreateWindowEx

Dialog Boxes

GetDlgItemInt

GetDlgItemText

Reference