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Tip of the Day
Language: Visual Basic
Expertise: Beginner
Aug 6, 1997



Application Security Testing: An Integral Part of DevOps

Center Your Forms

Add a method in VB 4.0 to center your forms against the screen or a parent form. Create a new project with two forms. Add this code to Form2:
 Public Sub ShowCentered(Optional vParent, _
	Optional vShowMode)
Dim oParent As Object
Dim iMode%, iLeft%, iTop%

	If IsMissing(vParent) Then 'default is Screen object
		Set oParent = Screen
	ElseIf TypeOf vParent Is Screen Or _
		TypeOf vParent Is Form Then
		Set oParent = vParent 
		'can add MDIForm to this condition
		Exit Sub
	End If

	If IsMissing(vShowMode) Then iMode = vbModeless Else _
		iMode = Abs(vShowMode) Mod 2
	'default is Modeless

	If TypeOf oParent Is Form Then iLeft = oParent.Left: _
		iTop = oParent.Top
	'cannot use Left and Top for Screen

	Move iLeft + (oParent.Width - Width) / 2, _
		iTop + (oParent.Height - Height) / 2

	Show iMode
End Sub
Put this code in Form1's Form_Load event:

Form2.ShowCentered Me, vbModal
Ian Carter
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