Question

C# 调用SendMessage来移动窗口

在我winform的click和move都放进了
SendMessage(this.handle,161,2,0);
来移动，但是测试好像不可以移动，该怎么移动？

Answer 1

...在你需要能拖动窗体的控件中添加MouseDown事件的处理,比如一个图片框:
[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 = 0x112;
public const int HTCAPTION = 0x0002;
public const int SC_MOVE = 0xF010; //移动

private void picDemo_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
//调动系统函数移动窗体
ReleaseCapture();
SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
}
}