标签:button lan param alt for most hwnd details classname
原文:WPF 精修篇 窗体唯一(Single) 显示在最前
只运行一个窗体 并在一次点击时 显示到最前
发现用
SetForegroundWindow 并不是稳定的有效
最后使用 SetWindowPos
贴码了
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public const int HWND_TOPMOST = -1;
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public const int HWND_NOTOPMOST = -2;
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protected override void OnStartup(StartupEventArgs e)
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Mutex mutex = new Mutex(true, "Single", out isNewInstance);
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if (isNewInstance != true)
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IntPtr intPtr = FindWindowW(null, "Single");
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if (intPtr != IntPtr.Zero)
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SetWindowPos(intPtr, HWND_TOPMOST, 0, 0, 0, 0, 1 | 2);
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SetWindowPos(intPtr, HWND_NOTOPMOST, 0, 0, 0, 0, 1 | 2);
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SetForegroundWindow(intPtr);
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[DllImport("User32", CharSet = CharSet.Unicode)]
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static extern IntPtr FindWindowW(String lpClassName, String lpWindowName);
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[DllImport("User32", CharSet = CharSet.Unicode)]
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static extern Boolean SetForegroundWindow(IntPtr hWnd);
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[DllImport("user32.dll", CharSet = CharSet.Auto)]
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private static extern int SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int y, int Width, int Height, int flags);
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[DllImport("user32.dll")]
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public static extern IntPtr SetFocus(IntPtr hWnd);
代码:
https://download.csdn.net/download/q465162770/12003540
WPF 精修篇 窗体唯一(Single) 显示在最前
标签:button lan param alt for most hwnd details classname
原文地址:https://www.cnblogs.com/lonelyxmas/p/12075430.html