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Laurijn
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I'm tryin to make a clear butten to clear graphics I drew in a panel

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Hy,
im trying to find the code to clear the graphics i drew in a panel.

Graphics gVenster = panel1.CreateGraphics(); -> is what I used to make the panel ready for graph.


private void wissen_MouseClick(object sender, MouseEventArgs e)
{



}

I tried to put panel.Clear(); gVenster.Clear(); between the curly braces. the only thing that doenst give me an error is tekenpanel.Dispose(); but then my whole panel is gone..

Please help me beceause this is part of een exam in school... I'm new in C# en managed to program a program like paint that works, this is the only thing that doens't work..

THanks in advance!!

clear panel
  • asked one year ago
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last answered one year ago

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Try something like this:

// declare private field
private Graphics gVenster = null;

// in method where you do the drawing
gVenster = panel1.CreateGraphics();   // now using the field
// etc

private void wissen_MouseClick(object sender, MouseEventArgs e)
{
   if (gVenster != null) 
   {
     gVenster.Clear(panel1.BackColor);
     gVenster.Dispose();
     gVenster = null;
   }
}

Notice that gVenster needs to be a form level variable (i.e. a field), not a local variable, for this to work.

  • answered one year ago by:

    vulpes
    17279
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