hWnd Property

Applies To Form, Report.

Description

You can use the hWnd property to determine the handle (a unique Long Integer value) assigned by Microsoft Windows to the current window.

Setting

This property is read-only and is available only by using a macro or Visual Basic.

Remarks

You can use this property in Visual Basic when making calls to Windows application programming interface (API) functions or other external routines that require the hWnd property as an argument. Many Windows functions require the hWnd property value of the current window as one of the arguments.

Caution Because the value of this property can change while a program is running, don't store the hWnd property value in a public variable.

See Also

Declare statement, hWndAccessApp property.

Example

The following example uses the hWnd property with the Windows API IsZoomed function to determine if a window is maximized.

' Enter on single line in Declarations section of Module window.
Declare Function IsZoomed Lib "user32" (ByVal hWnd As Long) As Long

Sub Form_Activate()
    Dim intWindowHandle As Long
    intWindowHandle = Screen.ActiveForm.hWnd
    If Not IsZoomed(intWindowHandle) Then
        DoCmd.Maximize
    End If
End Sub