C# 在屏幕上绘制位图图像
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Draw a Bitmap image on the screen
提问by 13driver
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?
我试图在我的主监视器上打印（在屏幕上显示）一个屏幕截图，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，我该怎么做？
EDIT: Here is what I want to do http://msdn.microsoft.com/en-us/library/8tda2c3c.aspx
编辑：这是我想要做的 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: this is my first time using the site so excuse any noobish mistakes I might have made
PS：这是我第一次使用该网站，所以请原谅我可能犯的任何小错误
采纳答案by Picrofo Software
You'll need to call print(Bitmap, PaintEventArgs)within the form Paintevent.
您需要print(Bitmap, PaintEventArgs)在表单Paint事件中调用。
Try this
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);
}
Thanks,
I hope you find this helpful :)
谢谢，
我希望你觉得这有帮助:)
回答by icktoofay
The simplest way would be to use a Windows Forms PictureBoxinside a Form.
最简单的方法是PictureBox在Form.
For example:
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);
回答by Ramgy Borja
make it simple just.
让它变得简单而已。
//Draw Image
// location of you image
Bitmap img = Properties.Resources.myImage;
// set image
Image newImg = img;
// draw a image
e.Graphics.DrawImage(newImg, 180F, 18F, newImg.Width, newImg.Height);
回答by Jeremiah Jordan
I have a very good solution, but you need to calculate the position and sizing for your stuff. Unfortunately, I have not figured out how to draw an img to screen yet.
我有一个很好的解决方案，但你需要计算你的东西的位置和尺寸。不幸的是，我还没有弄清楚如何将 img 绘制到屏幕上。
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Threading;
namespace DIRECTDRAW
{
class Program
{
[DllImport("user32.dll")]
static extern IntPtr GetDC(IntPtr hwnd);
static void draw(Rectangle r, Brush b, IntPtr hwnd)
{
using (Graphics g = Graphics.FromHdc(hwnd))
{
g.FillRectangle(b, r);
}
}
static void Main(string[] args)
{
int w = 5;
int h = 5;
Point xy = new Point(960 - w, 540 - h);
draw(new Rectangle(xy, new Size(w, h)), new SolidBrush(Color.White), GetDC(IntPtr.Zero));
Thread.Sleep(1);
Main(args);
}
}
}
I put in a loop function so that your "thing" doesn't disappear, and I made the wait part at 1 milisecond so that the dot doesn't flicker. Thankfully it's a console app so it won't freeze.
我加入了一个循环函数，这样你的“东西”就不会消失，我在 1 毫秒时做了等待部分，这样点就不会闪烁。值得庆幸的是，它是一个控制台应用程序，因此不会冻结。
Found this solution out from Draw Directly To Screen.
从Draw Directly To Screen 中找到了这个解决方案。
