再添加三个鼠标事件：
private void Form2_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
blnMouseDown = true;
// Save window position and mouse position
ptMouseCurrrnetPos = Control.MousePosition;
ptFormPos = Location;
}
}
private void Form2_MouseMove(object sender, 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 Form2_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
//Return back signal
blnMouseDown = false;
}
第三种移动无标标题窗体的办法：
通过API来处理，需要引入System.Runtime.InteropServices;
[DllImport("user32.dll")]
public static extern bool ReleaseCapture();
[DllImport("user32.dll")]
public static extern bool SendMessage(IntPtr hwnd,int wMsg,int wParam,int lParam);
public const int WM_SYSCOMMAND=0x0112;
public const int SC_MOVE=0xF010;
public const int HTCAPTION=0x0002;
private void Form2_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
ReleaseCapture();
SendMessage(this.Handle,WM_SYSCOMMAND,SC_MOVE+HTCAPTION, 0);
}
呵，这个看起来好像比较“正统”。
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2010/5/28 10:50:00
顶端 
用C#做一个悬浮窗口[含三种移动无标题窗体的办法](1943字) － 卷积内核，2010年5月28日
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