在屏幕上绘制位图图像 [英] Draw a Bitmap image on the screen

问题描述

我正在尝试在主监视器上打印(显示在屏幕上)屏幕截图，我想我已经具备了实现该功能所需的所有必要变量，但是我不知道如何克服"PaintEventArgs"的问题. 我应该发送什么，我应该怎么做?

Im trying to print (show in screen ) a screenshot on my main monitor , I think I’ve got all the necessary variables to make that happen but I have no clue how to get past " PaintEventArgs" . What should I send, how should I do it?

这是我想做的 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:这是我第一次使用该网站，所以请原谅我可能犯的任何愚蠢的错误

PS: this is my first time using the site so excuse any noobish mistakes I might have made

推荐答案

您需要在Paint表单事件中调用print(Bitmap, PaintEventArgs).

You'll need to call print(Bitmap, PaintEventArgs) within the form Paint event.

尝试一下

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，
希望您能对此有所帮助:)

Thanks,
I hope you find this helpful :)

这篇关于在屏幕上绘制位图图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！