SetPixels

M

Monsterman22

Member

• Jul 24, 2010

• #1

Hello.
I played with the ImageLib a little.
Just copy the color values of a bitmap to a textfile and redraw it anywhere.
Some may find it interesting.
Criticism is welcome.

 

Attachments

• SetPixels.zip

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Last edited: Jul 24, 2010

M

Monsterman22

Member

• Jul 25, 2010

• #2

Still I don't understand why SetPixel doesn't work at Button_click :

Sub Button_click
Bitmap.SetPixel(x,y,color)
End Sub

???

 

agraham

Expert

Licensed User

Longtime User

• Jul 25, 2010

• #3

Probably because the form doesn't know the bitmap has changed and doesn't redraw it. Try Form.Refresh to redraw the whole form or Drawer.Refresh to redraw the part that has changed.

 

M

Monsterman22

Member

• Jul 25, 2010

• #4

Try Form.Refresh to redraw the whole form

Click to expand...

It works :sign0060:

Button_Click
Bitmap.SetPixel(X,Y,color)
Form1.Refresh
Form1.DrawImage(Bitmap.Value,0,0,100,100)
End Sub

 

agraham

Expert

Licensed User

Longtime User

• Jul 25, 2010

• #5

You probably don't actually need the Refresh as you are doing a DrawImage after altering the bitmap which propbably does an automatic refresh. Try it and see.

 

M

Monsterman22

Member

• Jul 25, 2010

• #6

Yes you are right Refresh is not needed