代碼如下:
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern int SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int y, int Width, int Height, int flags);
/// <summary>
/// 得到當(dāng)前活動(dòng)的窗口
/// </summary>
/// <returns></returns>
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern System.IntPtr GetForegroundWindow();
哪個(gè)窗體想要置頂，在Form_Load中加上
SetWindowPos(this.Handle, -1, 0, 0, 0, 0, 1 | 2); //最后參數(shù)也有用1 | 4
具體說明，看API函數(shù)說明
如果是用點(diǎn)擊一個(gè)按鈕后彈出新窗體，并置頂，則：
代碼如下:
Form2 frm = new Form2();
frm.Show();
SetWindowPos(GetForegroundWindow(), -1, 0, 0, 0, 0, 1 | 2);
這樣，新打開的窗體就是置頂了
