如何捕获窗口的快照,包括标题栏
下面是我的例程,它工作正常,但例程没有生成包括标题栏的窗口图像.所以请指导我在代码中需要更改什么.
below is my routine which works fine but the routine is not generating the image of window including title bar. so guide me what i need to change in code.
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_COMMAND && m.WParam.ToInt32() == SC_MINIMIZE)
{
OnMinimize(EventArgs.Empty);
}
base.WndProc(ref m);
}
protected virtual void OnMinimize(EventArgs e)
{
Rectangle r = this.RectangleToScreen(ClientRectangle);
if (_lastSnapshot == null)
{
_lastSnapshot = new Bitmap(r.Width, r.Height);
}
using (Image windowImage = new Bitmap(r.Width, r.Height))
using (Graphics windowGraphics = Graphics.FromImage(windowImage))
using (Graphics tipGraphics = Graphics.FromImage(_lastSnapshot))
{
windowGraphics.CopyFromScreen(new Point(r.Left, r.Top), new Point(0, 0), new Size(r.Width, r.Height));
windowGraphics.Flush();
tipGraphics.DrawImage(windowImage, 0, 0, r.Width, r.Height);
}
}
更新
您的代码有效,但左上角的某些部分不正常.所以在这里我上传我使用你的代码生成的图像.请看看并告诉我我需要在代码中修复什么.表单宽度不正确.谢谢
UPDATE
ur code works but some top left portion is not ok. so here i am uploading the image which i have generated using ur code. please have a look and tell me what i need to fix in the code. form width is not coming properly. thanks
Bitmap bmp = new Bitmap(this.Width, this.Height);
this.DrawToBitmap(bmp, new Rectangle(Point.Empty, bmp.Size));
bmp.Save(@"d:\Zapps.bmp", ImageFormat.Bmp);
简单的获取标题栏的高度,加上要截取的区域的高度(并从当前图片的顶部减去——勾选以下更改的来源):
Simply get the height of the title bar and add it to the height of the area to be captured (and subtract it from the current top of the image - check the source below for the changes):
protected virtual void OnMinimize(EventArgs e)
{
Rectangle r = this.RectangleToScreen(this.ClientRectangle);
int titleHeight = r.Top - this.Top;
_lastSnapshot = new Bitmap(r.Width, r.Height);
using (Image windowImage = new Bitmap(r.Width, r.Height + titleHeight))
using (Graphics windowGraphics = Graphics.FromImage(windowImage))
using (Graphics tipGraphics = Graphics.FromImage(_lastSnapshot))
{
windowGraphics.CopyFromScreen(new Point(r.Left, r.Top - titleHeight),
new Point(0, 0), new Size(r.Width, r.Height + titleHeight));
windowGraphics.Flush();
tipGraphics.DrawImage(windowImage, 0, 0, r.Width, r.Height + titleHeight);
_lastSnapshot.Save(@".\tmp.bmp", ImageFormat.Bmp);
}
}