private void trackBar1_ValueChanged(object sender, System.EventArgs e)
{
this.Opacity=(float)(100-this.trackBar1.Value*2)/100;
}
拖动一个trackBar上来，很简单的打入如下代码:
private void trackBar1_ValueChanged(object sender, System.EventArgs e)
{
this.Opacity=(float)(100-this.trackBar1.Value*2)/100;
}
private void trackBar1_ValueChanged(object sender, System.EventArgs e) { this.Opacity=(float)(100-this.trackBar1.Value*2)/100; }转载于:https://www.cnblogs.com/mgod/archive/2008/06/17/1224251.html
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