Hi,

I am creating a user control class and would like to draw an image on it using the Graphics class. But, I need the white bits to not draw. I know the command MyGraphics.DrawImage(Image,X,Y,Width,Height), but this cannot draw transparent parts. Is it possible to do this?

Thanks,,

Matt

Use Bitmap.MakeTransparent. For example:

public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
protected override void OnPaint(PaintEventArgs e) {
using (Bitmap bmp = Properties.Resources.Example) {
bmp.MakeTransparent(Color.White);
e.Graphics.DrawImage(bmp, 0, 0);
}
}
}

---

Hans Passant.

Hello,
I have an idea. Cheat. Fake it out.

Draw your stuff on a borderless form dynamically aligned over top of your current form.


Rudedog =8^D

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Mark the best replies as answers. "Fooling computers since 1971."

Set CompositingMode to SourceOver and set the alpha of thepixels you want transparent to 0.

Use Bitmap.MakeTransparent. For example:

public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
protected override void OnPaint(PaintEventArgs e) {
using (Bitmap bmp = Properties.Resources.Example) {
bmp.MakeTransparent(Color.White);
e.Graphics.DrawImage(bmp, 0, 0);
}
}
}

---

Hans Passant.