我用Graphics 绘制图片,刚开始为什么绘制不出来呢,就是没有显示,当循环多次后台显示图片。
求解答,完整代码如下:
using System;
using System.Windows.Forms;
using System.Drawing;
using System.Threading;namespace 多线程带参数
{
class Form1 : Form
{
private PictureBox pic;
Graphics g;
private int Bit_X,Loca;
Bitmap bit; public Form1()
{
Initialize();
} private void Initialize()
{
pic = new PictureBox();
pic.Size = new Size(32, 48);
pic.Location = new Point(0,0);
g = pic.CreateGraphics(); this.SuspendLayout();
this.Controls.Add(pic); this.Size = new Size(500, 280);
this.StartPosition = FormStartPosition.CenterScreen;
this.ResumeLayout();
bit = new Bitmap("MAN.png");
Loca=Bit_X = 0;
Thread thread1 = new Thread(new ThreadStart(ManMove));
thread1.IsBackground = true;
thread1.Start();
CheckForIllegalCrossThreadCalls = false;
} private void ManMove()
{
while (pic.Location.X < 500 - 32)
{
//bit.RotateFlip(RotateFlipType.Rotate90FlipY);
Rectangle rect = new Rectangle(Bit_X, 96, 32, 48);
Rectangle rectLoca=new Rectangle(0, 0, 32, 48);
g.DrawImage(bit, rectLoca, rect, GraphicsUnit.Pixel); Thread.Sleep(5000);
// Bit_X += 32;
if (Bit_X >= 192)
Bit_X = 0;
// g.Clear(pic.BackColor);
// pic.Location =new Point(Loca+=5,0);
}
MessageBox.Show("Exit");
}
}
}
求解答,完整代码如下:
using System;
using System.Windows.Forms;
using System.Drawing;
using System.Threading;namespace 多线程带参数
{
class Form1 : Form
{
private PictureBox pic;
Graphics g;
private int Bit_X,Loca;
Bitmap bit; public Form1()
{
Initialize();
} private void Initialize()
{
pic = new PictureBox();
pic.Size = new Size(32, 48);
pic.Location = new Point(0,0);
g = pic.CreateGraphics(); this.SuspendLayout();
this.Controls.Add(pic); this.Size = new Size(500, 280);
this.StartPosition = FormStartPosition.CenterScreen;
this.ResumeLayout();
bit = new Bitmap("MAN.png");
Loca=Bit_X = 0;
Thread thread1 = new Thread(new ThreadStart(ManMove));
thread1.IsBackground = true;
thread1.Start();
CheckForIllegalCrossThreadCalls = false;
} private void ManMove()
{
while (pic.Location.X < 500 - 32)
{
//bit.RotateFlip(RotateFlipType.Rotate90FlipY);
Rectangle rect = new Rectangle(Bit_X, 96, 32, 48);
Rectangle rectLoca=new Rectangle(0, 0, 32, 48);
g.DrawImage(bit, rectLoca, rect, GraphicsUnit.Pixel); Thread.Sleep(5000);
// Bit_X += 32;
if (Bit_X >= 192)
Bit_X = 0;
// g.Clear(pic.BackColor);
// pic.Location =new Point(Loca+=5,0);
}
MessageBox.Show("Exit");
}
}
}
声明一个开始绘制和绘制完成的事件来通知主线程