我的表格背景是透明的。我在表格上有一个按钮。单击按钮时,将拍摄透明区域的屏幕截图,并分析屏幕截图以查找特定参考图像,如果找到图像,则应在参考图像周围绘制一个矩形。现在按下按钮时没有任何反应。我正在使用BotSuite Dll,这里提供:http://www.botsuite.net/。我点击按钮的代码如下:
private void button1_Click(object sender, EventArgs e)
{
Invalidate();
//take screenshot of transparent form area
Bitmap CapturedScreen = ScreenShot.Create((this.Left + 8), (this.Top + 30), 780, 415);
ImageData refpic = new ImageData("pallo.bmp");
ImageData source = new ImageData(CapturedScreen);
Graphics graphics = this.CreateGraphics();
Pen p = new Pen(Color.Black, 1);
graphics.DrawRectangle(p, Template.Image(source, refpic, 100));
Refresh();
}
答案 0 :(得分:3)
尝试将绘图逻辑移动到Paint
evet。
假设您正在使用名为pnl
的面板。请尝试以下方法:
在你的构造函数注册到paint evet:
this.pnl.Paint += pnl_Paint;
单击后,设置一个标志以指示矩形需要绘画:
bool _paintRect;
private void button1_Click(object sender, EventArgs e)
{
this._paintRect = true;
Invalidate();
Refresh();
}
在paint事件处理程序中,执行实际绘制:
private void pnl_Paint(object sender, PaintEventArgs e)
{
//take screenshot of transparent form area
Bitmap CapturedScreen = ScreenShot.Create((this.Left + 8), (this.Top + 30), 780, 415);
ImageData refpic = new ImageData("pallo.bmp");
ImageData source = new ImageData(CapturedScreen);
Graphics graphics = e.Graphics;
Pen p = new Pen(Color.Black, 1);
graphics.DrawRectangle(p, Template.Image(source, refpic, 100));
}