事实上,这是设定Container的问题,但Form中没有Container的属性,所以使用SetParent 来做,不过,这和VB中Parent的属性是不太相同的,VB的Parent指的是这个控制项(或 window)是哪一个Window的子Window(Parent Window destory时Child Window也会Destory) 而VB的Container指的是子控制项会随着Container所指的Window来定位置,例如:command1 放在Frame中,则Command Button的Parent是Form,而Container是Frame,即Command Button 随Frame移动,但Form结束时也随之Destory。 而SetParent是指Container的转换,而非VB中Parent属性的转换。
'需一个MdiForm ,一个Form1并事先设其MdiChild = True, 另有2个Command Button ' below is in Form1 Option Explicit Private Declare Function SetParent Lib "user32" (ByVal hWndChild As Long, ByVal hWndNewParent As Long) As Long Private OldContainer As Long Private Sub Command1_Click() OldContainer = SetParent(Me.hWnd, 0) End Sub
Private Sub Command2_Click() Call SetParent(Me.hWnd, OldContainer) Me.Move 0, 0 End Sub
Private Sub Form_Load() Command1.Caption = "移出" Command2.Caption = "移入" End Sub
' below is in MDIForm1 Private Sub MDIForm_Load() Form1.Show End Sub
将MdiForm内的Form移出MdiForm |