本文介绍C#使用Windows API函数:SetParent、SetWindowPos和FindWindow实现让WinForm嵌入桌面窗口最底层,并提供详细的实现代码供参考。
此类将窗体永远置于窗口最底层。
首先, 调用一些User32.dll的WinAPI函数。
- internal class User32
-
- {
-
- public const int SE_SHUTDOWN_PRIVILEGE = 0x13;
-
-
-
- [DllImport("user32.dll")]
-
- public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
-
-
-
- [DllImport("user32.dll")]
-
- public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
-
-
-
- [DllImport("user32.dll")]
-
- public static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx,
-
- int cy, uint uFlags);
-
- }
然后, 在WinForm里面:
- public MainForm()
-
- {
-
- InitializeComponent();
-
-
-
- try
-
- {
-
- if (Environment.OSVersion.Version.Major < 6)
-
- {
-
- base.SendToBack();
-
-
-
- IntPtr hWndNewParent = User32.FindWindow("Progman", null);
-
- User32.SetParent(base.Handle, hWndNewParent);
-
- }
-
- else
-
- {
-
- User32.SetWindowPos(base.Handle, 1, 0, 0, 0, 0, User32.SE_SHUTDOWN_PRIVILEGE);
-
- }
-
- }
-
- catch (ApplicationException exx)
-
- {
-
- MessageBox.Show(this, exx.Message, "Pin to Desktop");
-
- }
-
- }
-
-
-
- private void MainForm_Activated(object sender, EventArgs e)
-
- {
-
- if (Environment.OSVersion.Version.Major >= 6)
-
- {
-
- User32.SetWindowPos(base.Handle, 1, 0, 0, 0, 0, User32.SE_SHUTDOWN_PRIVILEGE);
-
- }
-
- }
-
-
-
- private void MainForm_Paint(object sender, PaintEventArgs e)
-
- {
-
- if (Environment.OSVersion.Version.Major >= 6)
-
- {
-
- User32.SetWindowPos(base.Handle, 1, 0, 0, 0, 0, User32.SE_SHUTDOWN_PRIVILEGE);
-
- }
-
- }
以上介绍的就是C#如何让WinForm嵌入桌面窗口最底层,希望对你有所帮助。