1 public partial class Form2 : Form
2 {
3 //窗体阴影
4 private const int CS_DropSHADOW = 0x20000;
5 private const int GCL_STYLE = (-26);
6 [DllImport("user32.dll", CharSet = CharSet.Auto)]
7 public static extern int SetClassLong(IntPtr hwnd, int nIndex, int dwNewLong);
8 [DllImport("user32.dll", CharSet = CharSet.Auto)]
9 public static extern int GetClassLong(IntPtr hwnd, int nIndex);
10
11 public Form2()
12 {
13 InitializeComponent();
14 SetClassLong(this.Handle, GCL_STYLE, GetClassLong(this.Handle, GCL_STYLE) | CS_DropSHADOW);//调用窗体阴影函数
15 }
16
17 #region//窗体移动API
18 [DllImport("user32.dll")]
19 public static extern bool ReleaseCapture();
20 [DllImport("user32.dll")]
21 public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int IParam);
22 public const int WM_SYSCOMMAND = 0x0112;
23 public const int SC_MOVE = 0xF010;
24 public const int HTCAPTION = 0x0002;
25 [DllImport("user32")]
26 private static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, IntPtr lParam);
27 private const int WM_SETREDRAW = 0xB;
28
29 private void Form2_MouseDown(object sender, MouseEventArgs e)//一个鼠标按下事件
30 {
31 if (this.WindowState == FormWindowState.Normal)
32 {
33 ReleaseCapture();
34 SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
35 }
36 }
37 #endregion
