protected virtual void OnPrintScreen(MyBrowserPrintScreenEventArgs e)
{
// 获取网页高度和宽度,也可以自己设置
var height = this.Document.Body.ScrollRectangle.Height;
var width = this.Document.Body.ScrollRectangle.Width;
var screenHeight = this.Size.Height;
//var screenHeight = this.FindForm().Height;
//MessageBox.Show(height.ToString());
//MessageBox.Show(this.FindForm().Height.ToString());
var pages = (height - 1) / screenHeight + 1;
/*WebBrowser自带截图方法无法使用
* var bitmap = new Bitmap(width, height);
* this.DrawToBitmap(bitmap, new Rectangle(0, 0, width, height));
* bitmap.Save(e.PrintScreenFilePath);
* //*/
//MessageBox.Show(pages.ToString());
//*强制只截屏首页
pages = 1;
//*/
for (int i = 0; i < pages; i++)
{
this.Document.Window.ScrollTo(0, i * screenHeight);
//*网上找到的调用windows底层系统api抓屏
IntPtr myIntptr = this.Handle;
int hwndInt = myIntptr.ToInt32();
IntPtr hwnd = myIntptr;
// Set hdc to the bitmap
Bitmap bm = new Bitmap(this.Size.Width, this.Size.Height);
//Bitmap bm = new Bitmap(width, height);
Graphics g = Graphics.FromImage(bm);
IntPtr hdc = g.GetHdc();
// Snapshot the WebBrowser
bool result = PrintWindow(hwnd, hdc, 0);
g.ReleaseHdc(hdc);
g.Flush();
bm.Save(e.PrintScreenFilePath.Replace(".jpg", "_" + i + ".jpg"));
}
if (PrintScreen != null)
{
PrintScreen(this, e);
}
}
public void DoPrintScreen(string filePath = null)
{
filePath = filePath ?? PrintScreenFilePath;
var e = new MyBrowserPrintScreenEventArgs()
{
PrintScreenFilePath = filePath
};
OnPrintScreen(e);
}
