| 'Create different types of regions declares Private Declare Function CreateRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long Private Declare Function CreateEllipticRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long Private Declare Function CreateRoundRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long, ByVal X3 As Long, ByVal Y3 As Long) As Long Private Declare Function CreatePolygonRgn Lib "gdi32" (lpPoint As POINTAPI, ByVal nCount As Long, ByVal nPolyFillMode As Long) As Long 'POINTAPI type required for CreatePolygonRgn Private Type POINTAPI X As Long Y As Long End Type 'Sets the region Private Declare Function SetWindowRgn Lib "user32" (ByVal hwnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long 'Combines the region Private Declare Function CombineRgn Lib "gdi32" (ByVal hDestRgn As Long, ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long, ByVal nCombineMode As Long) As Long 'Type of combine Const RGN_XOR = 3 Public Sub MakeTransparent(ByVal TransForm As Form) Dim ErrorTest As Double 'In case there's an error, ignore it On Error Resume Next Dim Regn As Long Dim TmpRegn As Long Dim TmpControl As Control Dim LinePoints(4) As POINTAPI 'Since the apis work with pixels, change the scalemode 'To pixels TransForm.ScaleMode = 3 'You have to have a borderless form, this just makes 'sure it's borderless If TransForm.BorderStyle <> 0 Then MsgBox "Change the borderstyle to 0!", vbCritical, "ACK!": End 'makes everything invisible Regn = CreateRectRgn(0, 0, 0, 0) 'A loop to check every control in the form For Each TmpControl In TransForm 'If the control is a line... If TypeOf TmpControl Is Line Then 'Checks the slope If Abs((TmpControl.Y1 - TmpControl.Y2) / (TmpControl.X1 - TmpControl.X2)) > 1 Then 'If it's more verticle than horizontal then 'Set the points LinePoints(0).X = TmpControl.X1 - 1 LinePoints(0).Y = TmpControl.Y1 LinePoints(1).X = TmpControl.X2 - 1 LinePoints(1).Y = TmpControl.Y2 LinePoints(2).X = TmpControl.X2 + 1 LinePoints(2).Y = TmpControl.Y2 LinePoints(3).X = TmpControl.X1 + 1 LinePoints(3).Y = TmpControl.Y1 Else 'If it's more horizontal than verticle then 'Set the points LinePoints(0).X = TmpControl.X1 LinePoints(0).Y = TmpControl.Y1 - 1 LinePoints(1).X = TmpControl.X2 LinePoints(1).Y = TmpControl.Y2 - 1 LinePoints(2).X = TmpControl.X2 LinePoints(2).Y = TmpControl.Y2 + 1 LinePoints(3).X = TmpControl.X1 LinePoints(3).Y = TmpControl.Y1 + 1 End If 'Creates the new polygon with the points TmpRegn = CreatePolygonRgn(LinePoints(0), 4, 1) 'If the control is a shape... ElseIf TypeOf TmpControl Is Shape Then 'An if that checks the type If TmpControl.Shape = 0 Then 'It's a rectangle TmpRegn = CreateRectRgn(TmpControl.Left, TmpControl.Top, TmpControl.Left + TmpControl.Width, TmpControl.Top + TmpControl.Height) ElseIf TmpControl.Shape = 1 Then 'It's a square If TmpControl.Width < TmpControl.Height Then TmpRegn = CreateRectRgn(TmpControl.Left, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2, TmpControl.Left + TmpControl.Width, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + TmpControl.Width) Else TmpRegn = CreateRectRgn(TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2, TmpControl.Top, TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + TmpControl.Height, TmpControl.Top + TmpControl.Height) End If ElseIf TmpControl.Shape = 2 Then 'It's an oval TmpRegn = CreateEllipticRgn(TmpControl.Left, TmpControl.Top, TmpControl.Left + TmpControl.Width + 0.5, TmpControl.Top + TmpControl.Height + 0.5) ElseIf TmpControl.Shape = 3 Then 'It's a circle If TmpControl.Width < TmpControl.Height Then TmpRegn = CreateEllipticRgn(TmpControl.Left, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2, TmpControl.Left + TmpControl.Width + 0.5, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + TmpControl.Width + 0.5) Else TmpRegn = CreateEllipticRgn(TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2, TmpControl.Top, TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + TmpControl.Height + 0.5, TmpControl.Top + TmpControl.Height + 0.5) End If ElseIf TmpControl.Shape = 4 Then 'It's a rounded rectangle If TmpControl.Width > TmpControl.Height Then TmpRegn = CreateRoundRectRgn(TmpControl.Left, TmpControl.Top, TmpControl.Left + TmpControl.Width + 1, TmpControl.Top + TmpControl.Height + 1, TmpControl.Height / 4, TmpControl.Height / 4) Else TmpRegn = CreateRoundRectRgn(TmpControl.Left, TmpControl.Top, TmpControl.Left + TmpControl.Width + 1, TmpControl.Top + TmpControl.Height + 1, TmpControl.Width / 4, TmpControl.Width / 4) End If ElseIf TmpControl.Shape = 5 Then 'It's a rounded square If TmpControl.Width > TmpControl.Height Then TmpRegn = CreateRoundRectRgn(TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2, TmpControl.Top, TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + TmpControl.Height + 1, TmpControl.Top + TmpControl.Height + 1, TmpControl.Height / 4, TmpControl.Height / 4) Else TmpRegn = CreateRoundRectRgn(TmpControl.Left, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2, TmpControl.Left + TmpControl.Width + 1, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + TmpControl.Width + 1, TmpControl.Width / 4, TmpControl.Width / 4) End If End If 'If the control is a shape with a transparent background If TmpControl.BackStyle = 0 Then 'Combines the regions in memory and makes a new one CombineRgn Regn, Regn, TmpRegn, RGN_XOR If TmpControl.Shape = 0 Then 'Rectangle TmpRegn = CreateRectRgn(TmpControl.Left + 1, TmpControl.Top + 1, TmpControl.Left + TmpControl.Width - 1, TmpControl.Top + TmpControl.Height - 1) ElseIf TmpControl.Shape = 1 Then 'Square If TmpControl.Width < TmpControl.Height Then TmpRegn = CreateRectRgn(TmpControl.Left + 1, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + 1, TmpControl.Left + TmpControl.Width - 1, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + TmpControl.Width - 1) Else TmpRegn = CreateRectRgn(TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + 1, TmpControl.Top + 1, TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + TmpControl.Height - 1, TmpControl.Top + TmpControl.Height - 1) End If ElseIf TmpControl.Shape = 2 Then 'Oval TmpRegn = CreateEllipticRgn(TmpControl.Left + 1, TmpControl.Top + 1, TmpControl.Left + TmpControl.Width - 0.5, TmpControl.Top + TmpControl.Height - 0.5) ElseIf TmpControl.Shape = 3 Then 'Circle If TmpControl.Width < TmpControl.Height Then TmpRegn = CreateEllipticRgn(TmpControl.Left + 1, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + 1, TmpControl.Left + TmpControl.Width - 0.5, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + TmpControl.Width - 0.5) Else TmpRegn = CreateEllipticRgn(TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + 1, TmpControl.Top + 1, TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + TmpControl.Height - 0.5, TmpControl.Top + TmpControl.Height - 0.5) End If ElseIf TmpControl.Shape = 4 Then 'Rounded rectangle If TmpControl.Width > TmpControl.Height Then TmpRegn = CreateRoundRectRgn(TmpControl.Left + 1, TmpControl.Top + 1, TmpControl.Left + TmpControl.Width, TmpControl.Top + TmpControl.Height, TmpControl.Height / 4, TmpControl.Height / 4) Else TmpRegn = CreateRoundRectRgn(TmpControl.Left + 1, TmpControl.Top + 1, TmpControl.Left + TmpControl.Width, TmpControl.Top + TmpControl.Height, TmpControl.Width / 4, TmpControl.Width / 4) End If ElseIf TmpControl.Shape = 5 Then 'Rounded square If TmpControl.Width > TmpControl.Height Then TmpRegn = CreateRoundRectRgn(TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + 1, TmpControl.Top + 1, TmpControl.Left + (TmpControl.Width - TmpControl.Height) / 2 + TmpControl.Height, TmpControl.Top + TmpControl.Height, TmpControl.Height / 4, TmpControl.Height / 4) Else TmpRegn = CreateRoundRectRgn(TmpControl.Left + 1, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + 1, TmpControl.Left + TmpControl.Width, TmpControl.Top + (TmpControl.Height - TmpControl.Width) / 2 + TmpControl.Width, TmpControl.Width / 4, TmpControl.Width / 4) End If End If End If Else 'Create a rectangular region with its parameters TmpRegn = CreateRectRgn(TmpControl.Left, TmpControl.Top, TmpControl.Left + TmpControl.Width, TmpControl.Top + TmpControl.Height) End If 'Checks to make sure that the control has a width 'or else you'll get some weird results ErrorTest = 0 ErrorTest = TmpControl.Width If ErrorTest <> 0 Or TypeOf TmpControl Is Line Then 'Combines the regions CombineRgn Regn, Regn, TmpRegn, RGN_XOR End If Next TmpControl 'Make the regions SetWindowRgn TransForm.hwnd, Regn, True End Sub |
Transparent Form 2 |
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