C＃剪切工具服务

首先，这个问题是为了教育目的。C＃剪切工具服务

我的任务是做服务，捕获屏幕的选择部分像剪切工具在 Win7我设法做到这一点在赢的形式和它的工作很好，但当我做它在服务其返回黑屏我知道问题这是在不同的会话中运行的服务，所以我的问题是如何使服务运行并返回用户桌面，第二个问题是如何听取服务中的按键（我知道如何在表单中执行）任何请帮助。花点时间。我的表单代码：

private void CaptureScreen() 
{ 
    this.Hide(); 
    Thread.Sleep(300); 
    bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb); 
    gfxScreenshot = Graphics.FromImage(bmpScreenshot); 
    gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy); 
    bmpScreenshot.Save(DialogSave.FileName, ImageFormat.Jpeg); 

    pictureBox1.Image = bmpScreenshot; 
    this.Show(); 
} 

private static Image cropImage(Bitmap img, Rectangle cropArea) 
{ 
    Bitmap bmpCrop = img.Clone(cropArea, 
    img.PixelFormat); 
    return (Image)(bmpCrop); 
} 

private Rectangle selectArea(int recX1, int recY1,int recX2,int recY2) 
{ 
    int width = recX2 - recX1; 
    int height = recY2 - recY1; 
    return new Rectangle(recX1, recY1, width, height); 
} 

private void btnCrop_Click(object sender, EventArgs e) 
{ 
    if (x1 <= 0 || x2 <= 0 || y1 <= 0 || y2 <= 0) 
    { 
     MessageBox.Show("Please select area first", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); 
    } 
    else 
    { 
     Rectangle myrectangle = selectArea(x1, y1, x2, y2); 
     Bitmap myImg = (Bitmap)Image.FromFile(filename); 
     Image cr = cropImage(myImg, myrectangle); 
     na = @"F:\\" + Counter + ".jpg"; 
     while (File.Exists(@"F:\\" + Counter + ".jpg")) 
     { 
      Counter++; 
     } 
     na = @"F:\\" + Counter + ".jpg"; 
     cr.Save(@"F:\\" + Counter++ + ".jpg", ImageFormat.Jpeg); 
     pictureBox1.Image = cr; 
     System.Diagnostics.Process prc = new System.Diagnostics.Process(); 
     prc.StartInfo.FileName = @"F:\\"; 
     prc.Start(); 
     this.PrintScreennotifyIcon.BalloonTipText = "Save to" + na; 
     this.PrintScreennotifyIcon.BalloonTipTitle = "Info"; 
     this.PrintScreennotifyIcon.Visible = true; 
     this.PrintScreennotifyIcon.ShowBalloonTip(3); 
    } 
}

来源

2011-01-26 Rami owais

请编辑问题并添加大写，句号和其他标点符号，如问号。 – 2011-01-26 08:08:55

@Erno：我做了一些尝试修复 – abatishchev 2011-01-26 08:25:40

取决于操作系统。这在Windows Server上将无法工作。 – Remy 2011-01-26 08:28:53