problem with GDI+

[dawn]

Hi,

With the code I use to capture part of a form, an error shows up : External
GDI+ error

the code is the following

private void button3_Click(object sender, System.EventArgs e)
{

resdial.Activate() ;

System.IntPtr srcDC=GetDC(resdial.axWebBrowser1.Handle);

Bitmap bm=new Bitmap(50,50);

Graphics g=Graphics.FromImage(bm);

System.IntPtr bmDC=g.GetHdc();
BitBlt(bmDC,0,0,bm.Width,bm.Height,srcDC,0,0,0x00C C0020 /*SRCCOPY*/);

this.pictureBox1.Image = System.Drawing.Image.FromHbitmap(bmDC);
ReleaseDC(srcDC);

g.ReleaseHdc(bmDC);

g.Dispose();

}

The line that gives the error is

this.pictureBox1.Image = System.Drawing.Image.FromHbitmap(bmDC);

What's wrong with this?

Thanks

[Bob Powell [MVP]]

Please try to post the same subject and content only once. This is a busy
group and it doesn't need the extra traffic.

--
Bob Powell [MVP]
C#, System.Drawing

The October edition of Well Formed is now available.
Find out how to use DirectX in a Windows Forms control
http://www.bobpowell.net/currentissue.htm

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm

Read my Blog at http://bobpowelldotnet.blogspot.com

"dawn" <da******@hotmail.com> wrote in message
news:3y**********************@phobos.telenet-ops.be...

Hi,

With the code I use to capture part of a form, an error shows up : External GDI+ error

the code is the following

private void button3_Click(object sender, System.EventArgs e)
{

resdial.Activate() ;

System.IntPtr srcDC=GetDC(resdial.axWebBrowser1.Handle);

Bitmap bm=new Bitmap(50,50);

Graphics g=Graphics.FromImage(bm);

System.IntPtr bmDC=g.GetHdc();
BitBlt(bmDC,0,0,bm.Width,bm.Height,srcDC,0,0,0x00C C0020 /*SRCCOPY*/);

this.pictureBox1.Image = System.Drawing.Image.FromHbitmap(bmDC);
ReleaseDC(srcDC);

g.ReleaseHdc(bmDC);

g.Dispose();

}

The line that gives the error is

this.pictureBox1.Image = System.Drawing.Image.FromHbitmap(bmDC);

What's wrong with this?

Thanks