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這是我用來捕獲我的屏幕和鼠標cursour作爲屏幕截圖的一類。 但我想做出某種方式,如果窗體在屏幕中間不捕獲屏幕和窗體背後的區域,但不是它自己的窗體。如何在沒有窗體的情況下捕捉屏幕?
即使窗體在前面,我點擊按鈕或在應用程序運行時更改表單中的某些內容,但不要捕獲它,只需要捕獲屏幕窗體後面的區域,如表單不存在。
using System;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
namespace ScreenShotDemo
{
public class ScreenCapture
{
[StructLayout(LayoutKind.Sequential)]
struct CURSORINFO
{
public Int32 cbSize;
public Int32 flags;
public IntPtr hCursor;
public POINTAPI ptScreenPos;
}
[StructLayout(LayoutKind.Sequential)]
struct POINTAPI
{
public int x;
public int y;
}
[DllImport("user32.dll")]
static extern bool GetCursorInfo(out CURSORINFO pci);
[DllImport("user32.dll")]
static extern bool DrawIcon(IntPtr hDC, int X, int Y, IntPtr hIcon);
const Int32 CURSOR_SHOWING = 0x00000001;
public static Bitmap CaptureScreen(bool CaptureMouse)
{
Bitmap result = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);
try
{
using (Graphics g = Graphics.FromImage(result))
{
g.CopyFromScreen(0, 0, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);
if (CaptureMouse)
{
CURSORINFO pci;
pci.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(CURSORINFO));
if (GetCursorInfo(out pci))
{
if (pci.flags == CURSOR_SHOWING)
{
DrawIcon(g.GetHdc(), pci.ptScreenPos.x, pci.ptScreenPos.y, pci.hCursor);
g.ReleaseHdc();
}
}
}
}
}
catch
{
result = null;
}
return result;
}
}
我的意思是說我會看到,當它運行的形式和我將能夠改變的事情,點擊按鈕,但獲取的截屏,如果我將與我畫圖不會看到表單編輯。
這是在Form1中如何使捕獲:
private void StartRecording_Click(object sender, EventArgs e)
{
timer1.Enabled = true;
}
和定時器Tick事件:
private void timer1_Tick(object sender, EventArgs e)
{
using (bitmap = (Bitmap)ScreenCapture.CaptureScreen(true))
{
ffmp.PushFrame(bitmap);
}
}
這條線使實際捕獲:使用(位=(位圖)ScreenCapture.CaptureScreen (true))
,這是一個更好的解決方案。 –