usercontrol把form占满还怎么实现用户区拖动窗口？
如果form未被占满，那么点击没有被占用的地方，可以通过下面方式实现拖动窗口：
private System.Drawing.Point mousePosition;
private void FloatingToolForm_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
this.mousePosition.X = e.X;
this.mousePosition.Y = e.Y;
}
}
private void FloatingToolForm_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
this.Top = Control.MousePosition.Y - mousePosition.Y;
this.Left = Control.MousePosition.X - mousePosition.X;
}
}
只要在构造方法里加上
this.MouseDown += FloatingToolForm_MouseDown;
this.MouseMove += FloatingToolForm_MouseMove;就可以了。
可是如果form被一个usercontrol给占满了，在那个usercontrol的构造方法里，和这个form的构造方法里都加了这两个委托还是不行。怎么回事，怎么办呢？
[解决办法]
http://bbs.csdn.net/topics/320157403
2L
[解决办法]
public partial class Form1 : Form
{
private const int SC_MOVE = 0xF010;
private const int HTCAPTION = 0x0002;
private const int WM_SYSCOMMAND = 0x0112;
[DllImport("user32.dll")]
public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
[DllImport("user32.dll")]
public static extern bool ReleaseCapture();
public Form1()
{
InitializeComponent();
userControl1.MouseDown += new MouseEventHandler(userControl1_MouseDown);
}
private void userControl1_MouseDown(object sender, MouseEventArgs e)
{
ReleaseCapture();
SendMessage(Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
}
}
