| 1 | namespace WindowsApplication1 |
| 2 | { |
| 3 | public partial class Form1 : Form |
| 4 | { |
| 5 | public Form1() |
| 6 | { |
| 7 | InitializeComponent(); |
| 8 | } |
| 9 | private const int WM_NCHITTEST = 0x84; |
| 10 | private const int HTCLIENT = 0x1; |
| 11 | private const int HTCAPTION = 0x2; |
| 12 | private const int WM_NCLBUTTONDBLCLK = 0xA3;//鼠标双击标题栏消息 |
| 13 | |
| 14 | protected override void WndProc(ref Message m) |
| 15 | { |
| 16 | switch (m.Msg) |
| 17 | { |
| 18 | case WM_NCHITTEST: |
| 19 | base.WndProc(ref m); |
| 20 | if ((int)m.Result == HTCLIENT) |
| 21 | m.Result = (IntPtr)HTCAPTION; |
| 22 | return; |
| 23 | case WM_NCLBUTTONDBLCLK: |
| 24 | break; |
| 25 | default: |
| 26 | base.WndProc(ref m); |
| 27 | break; |
| 28 | } |
| 29 | |
| 30 | } |
| 31 | } |
| 32 |