在屏幕上绘制位图图像

Question

我试图在我的主显示器上打印(在屏幕上显示)截图,我想我已经有了所有必要的变量来实现这一点,但我不知道如何通过"PaintEventArgs".我应该发送什么,我应该怎么做？

编辑:这是我想做的事情 http://msdn.microsoft.com/en-us/library/8tda2c3c.aspx

static void Main(string[] args)
{
    Rectangle rect = Screen.PrimaryScreen.Bounds;
    int color = Screen.PrimaryScreen.BitsPerPixel;
    PixelFormat pf;
    pf = PixelFormat.Format32bppArgb;           
    Bitmap BM= new Bitmap(rect.Width, rect.Height, pf);
    Graphics g = Graphics.FromImage(BM);
    g.CopyFromScreen(rect.Left, rect.Top, 0, 0, rect.Size);
    Bitmap bitamp = new Bitmap(BM);
    print (bmp,) // what now?

}

private static void print(Bitmap BM, PaintEventArgs e)
{
    Graphics graphicsObj = e.Graphics; // or "Bitmap bitmap = new Bitmap("Grapes.jpg");"
    graphicsObj.DrawImage(BM, 60 ,10); // or "e.Graphics.DrawImage(bitmap, 60, 10);"
    graphicsObj.Dispose();
}

PS:这是我第一次使用这个网站,所以请原谅我可能犯的任何错误的错误

Answer 1

最简单的方法是在PictureBox内部使用Windows窗体Form.

例如:

Form form = new Form();
form.Text = "Image Viewer";
PictureBox pictureBox = new PictureBox();
pictureBox.Image = YourImage;
pictureBox.Dock = DockStyle.Fill;
form.Controls.Add(pictureBox);
Application.Run(form);

Answer 2

您需要print(Bitmap, PaintEventArgs)在表单Paint事件中调用。

尝试这个

private void Form1_Load(object sender, EventArgs e)
{
    Paint += new PaintEventHandler(Form1_Paint); //Link the Paint event to Form1_Paint; you can do this within the designer too!
}
private void print(Bitmap BM, PaintEventArgs e)
{
    Graphics graphicsObj = e.Graphics; //Get graphics from the event
    graphicsObj.DrawImage(BM, 60, 10); // or "e.Graphics.DrawImage(bitmap, 60, 10);"
    graphicsObj.Dispose();
}

private void Form1_Paint(object sender, PaintEventArgs e)
{
     Rectangle rect = Screen.PrimaryScreen.Bounds;
     int color = Screen.PrimaryScreen.BitsPerPixel;
     PixelFormat pf;
     pf = PixelFormat.Format32bppArgb;
     Bitmap BM = new Bitmap(rect.Width, rect.Height, pf); //This is the Bitmap Image; you have not yet selected a file,
     //Bitmap BM = new Bitmap(Image.FromFile(@"D:\Resources\International\Picrofo_Logo.png"), rect.Width, rect.Height);
     Graphics g = Graphics.FromImage(BM);
     g.CopyFromScreen(rect.Left, rect.Top, 0, 0, rect.Size);
     Bitmap bitamp = new Bitmap(BM);
     print(bitamp, e);
}

谢谢，
我希望你觉得这有帮助:)