Simple paint program...

Jason

20y3.6kGDI+

Hello, I'm trying to create an app that lets me paste in a screen shot and paint over parts of it then copy the new image to the clipboard. I can get the image to copy and paste but I'm having trouble finding examples of painting freehand and saving the final image.

Thanks,
Jason

4 Replies

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Jason20y ago
Very cool! I got it working.

void PictureBox1Paint(object sender, System.Windows.Forms.PaintEventArgs e)

{

try

{

//e.Graphics.SmoothingMode = SmoothingMode.HighQuality;

Graphics g = Graphics.FromImage(pictureBox1.Image);

g.SmoothingMode = SmoothingMode.HighQuality;

Pen drawingPen = new Pen(Color.White, 10);

//e.Graphics.DrawPath(drawingPen, mousePath);

g.DrawPath(drawingPen, mousePath);

}

catch

{}

}

It pasted just fine! Thanks guys.
0
Jason20y ago
OK I got the GraphicsPath working, I can draw fine. So I end up with 2 layers basically, the image is in the background and the drawing is on top. I just need to merge the two objects.

void PictureBox1Paint(object sender, System.Windows.Forms.PaintEventArgs e)

{

try

{

e.Graphics.SmoothingMode = SmoothingMode.HighQuality;

Pen drawingPen = new Pen(Color.White, 10);

e.Graphics.DrawPath(drawingPen, mousePath);

}

catch

{}

}

void PictureBox1MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)

{

if(e.Button == MouseButtons.Left)

{

mousePath.StartFigure();

}

}

void PictureBox1MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)

{

if(e.Button == MouseButtons.Left)

{

try

{

mousePath.AddLine(e.X,e.Y,e.X,e.Y);

}

catch

{

}

}

pictureBox1.Invalidate();

}

I need to put something on the MouseUp to merge them I think. Or I'm doing something wrong in the paint method.

Thanks
0
Mahesh Chand20y ago
You will have to create GraphicsPath object, which will have your old image and add new graphics objects to the GraphicsPath and generate the final image from it.

Alternatively, You can also create Bitmap object on fly, load old image, add new objects and save as image.
0
Mahesh Chand20y ago
GDI+ & Graphics section of this site has many samples on what you are looking for.
0