Declare Function IsChild Lib "user32.dll" (ByVal hWndParent As Long, ByVal hWnd As Long) As Long
IsChild determines if a parent-child relationship exists between two windows. The possible child window must be a direct descendant of the possible parent window. For example, if the possible child window is a child of a child of the possible parent window, the parent-child relationship does not exist.
If a parent-child relationship does not exist between the two windows, the function returns 0. If the relationship does exist, the function returns a non-zero value.
None.
' This code is licensed according to the terms and conditions listed here. ' Demonstrate a parent-child relationship and a non-parent-child ' relationship. Command1, a command button on window Form1, is a child ' of Form1. However, fellow window Form2 is not a child. Dim result As Long ' result of the function ' Verify that Command1 is a child of Form1. result = IsChild(Form1.hWnd, Command1.hWnd) ' see if Form1 is Command1's parent If result = 0 Then Debug.Print "Form1 is not Command1's parent window." ' won't happen Else Debug.Print "Form1 is Command1's parent window." ' will happen End If ' Verify that Form2 is not a child of Form1. result = IsChild(Form1.hWnd, Form2.hWnd) ' see if Form1 is Form2's parent If result = 0 Then Debug.Print "Form1 is not Form2's parent window." ' will happen Else Debug.Print "Form1 is Form2's parent window." ' won't happen
IsWindow, SetParent
Windows
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