説明のないとってもシンプルなサンプルプログラム集

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C#(mono) > (Forms)マウスを使う

gui-mouse.cs

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37 using System;
using System.Drawing;
using System.Windows.Forms;
class Test : Form
{
	PictureBox pb = new PictureBox();
	Bitmap bmp = new Bitmap(333,333);
	bool pen = false;
	Test()
	{
		pb.Dock = DockStyle.Fill;
		pb.Image = bmp;
		pb.MouseDown += new MouseEventHandler(MouseDown);
		pb.MouseMove += new MouseEventHandler(MouseMove);
		pb.MouseUp += new MouseEventHandler(MouseUp);
		Controls.Add(pb);
	}
	new void MouseDown(object sender, MouseEventArgs e){
		pen = true;
		bmp.SetPixel(e.X,e.Y,Color.Green);
		pb.Invalidate();
	}
	new void MouseMove(object sender, MouseEventArgs e){
		if(pen == true){
			bmp.SetPixel(e.X,e.Y,Color.Green);
			pb.Invalidate();
		}
	}
	new void MouseUp(object sender, MouseEventArgs e){
		pen = false;
	}
	[STAThread]
	public static void Main()
	{
		Application.Run(new Test());
	}
}

$ mcs gui-mouse.cs -r:System.Windows.Forms -r:System.Drawing
$ mono gui-mouse.exe

* 確認環境 Debian Linux(Jessie)