GDI+画图有关问题，请
日期：2014-05-17 浏览次数：20976 次
GDI+画图问题，请高手指点
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
Point P1 = new Point();
Point P2 = new Point();
bool isMouseDown = false;
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
isMouseDown = false;
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
Rectangle rect1=new Rectangle(50, 50, 200, 100);
Draw(g, rect1);
}
private void Draw(Graphics g, Rectangle rect)
{
GraphicsPath roundedRect = new GraphicsPath();
roundedRect.AddArc(rect.X, rect.Y, rect.Width, rect.Height, 0, 360);
roundedRect.CloseFigure();
Region pathRegion = new Region(roundedRect);
}
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
if (isMouseDown == false)
{
isMouseDown = true;
P1.X = e.X;
P1.Y = e.Y;
}
}
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
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