之前做的项目，趁机总结一下新学到的技能
C#拖拽窗体的实现
首先设置FormBorderStyle为none，设置topmost为true（显示为最顶层窗体）。接下来，主要是三个鼠标事件的处理，以下，具体说明如何实现。
局部成员声明。
private Point ptMouseCurrrnetPos, ptMouseNewPos,ptFormPos, ptFormNewPos;
private bool blnMouseDown=false;
主要的三个鼠标事件，即MouseDown、 MouseMove、 MouseUp三个事件。
private void frmTopMost_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if( blnMouseDown )
{
//Get the current position of the mouse in the screen
ptMouseNewPos = Control.MousePosition;
//Set window position
ptFormNewPos.X = ptMouseNewPos.X - ptMouseCurrrnetPos.X + ptFormPos.X;
ptFormNewPos.Y = ptMouseNewPos.Y - ptMouseCurrrnetPos.Y + ptFormPos.Y;
//Save window position
Location = ptFormNewPos;
ptFormPos = ptFormNewPos;
//Save mouse position
ptMouseCurrrnetPos = ptMouseNewPos;
}
}
private void frmTopMost_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button==MouseButtons.Left)
{
blnMouseDown = true;
// Save window position and mouse position
ptMouseCurrrnetPos = Control.MousePosition;
ptFormPos = Location;
}
}
private void frmTopMost_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
if( e.Button == MouseButtons.Left)
//Return back signal
blnMouseDown = false;
}
感谢沉寂的蓝的博客，想要了解悬浮窗口的实现可以参考下面的链接。
http://blog.sina.com.cn/s/blog_6e10930d0101acv9.html
