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Old March 18th, 2005, 01:47 PM
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Default GDI+ in 2 forms

I am having a strange problem that is driving me crazy. I am drawing rectangles to a picturebox in my main form based on values entered in text boxes in a second form. It is working however if I change teh values in form 2 the changes do not show up in form 1 until I minimize and maximize form 1 or until I click another application to move my app to the background then click my ap to make it active. I think the problom has to do with redrawing the screen on an event but I cannot find any documentation on it. Here is some of my code if it helps. Thanks in advance for any help

    Protected Overrides Sub OnPaint(e As PaintEventArgs)

           Dim MEF As bitmap= new Bitmap(MEFBOX.Width,MEFBOX.Height)


           'Defines your graphics holder
           Dim g As Graphics = Graphics.FromImage(MEF)

        'Defines your 4 line colors
        Dim fillcol As Color

             'assigns variables to the text boxes

           Dim WXTEXT As String="LGT RME ICG"

        'Defines array for the SZL row
        Dim x as integer
        Dim SZLBOXES(23) As rectangle

       'Set values for boxes
        Dim SZLNUMS(23) As Integer
        Dim Vals(23) As Integer

        'Defines cases for colors of your lines
           If szlwxval1=1 Then
           ElseIf szlwxval1<5 Then
        else fillcol=color.Red
        End If

       'Defines pens and brushes
           Dim NPN As pen=new Pen(color.Red,3)
        Dim BXBS As Solidbrush=new SolidBrush(fillcol)         
        Dim TXBS As Solidbrush=new SolidBrush(color.black)
           Dim fnt as Font = new Font("Times New Roman", 10)

           If SZLDLG.Visible=True Then 
            Me.ClientSize = New System.Drawing.Size(0, 0)
        Else Me.ClientSize = New System.Drawing.Size(800, 600)
           End If

       'Defines SZL rectangle sizes
           For x = box1val To box2val : szlboxes(x) = New Rectangle( (30*(x+1)), 10, 30, 20)  
           Next x

        'Draw boxes

        'save drawing to picturebox
      End Sub

       Private Sub KSZLBUTClick(sender As System.Object, e As System.EventArgs)

        'Show SZL form
             End Sub

and form2
    Private Sub SZLOKClick(sender As System.Object, e As System.EventArgs)

        Dim MFM as new MainForm()

        Dim SZLST1 As Integer
        Dim SZLST2 As Integer
        Dim SZLWeX1 as Integer




        End Sub

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