最大化帶有透明邊框的窗口

Question

我正在嘗試最大化具有透明邊框的窗口。 最大化時，透明邊框不應顯示。 我遵循此處找到的方法，通過使用以下代碼，我可以使其工作一半。

void win_SourceInitialized(object sender, EventArgs e) {
    System.IntPtr handle = (new WinInterop.WindowInteropHelper(this)).Handle;
    WinInterop.HwndSource.FromHwnd(handle).AddHook(new WinInterop.HwndSourceHook(WindowProc));
}

private static System.IntPtr WindowProc(System.IntPtr hwnd, int msg,
          System.IntPtr wParam, System.IntPtr lParam, ref bool handled) {
    switch (msg) {
        case 0x0024:/* WM_GETMINMAXINFO */
            WmGetMinMaxInfo(hwnd, lParam);
            handled = true;
            break;
    }
    return (System.IntPtr)0;
}

private static void WmGetMinMaxInfo(System.IntPtr hwnd, System.IntPtr lParam) {     
    MINMAXINFO mmi = (MINMAXINFO)Marshal.PtrToStructure(lParam, typeof(MINMAXINFO));

    // Adjust the maximized size and position to fit the work area of the correct monitor
    int MONITOR_DEFAULTTONEAREST =0x00000002;
    System.IntPtr monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);

    if (monitor != System.IntPtr.Zero) {
        MONITORINFO monitorInfo = new MONITORINFO();
        GetMonitorInfo(monitor, monitorInfo);
        RECT rcWorkArea = monitorInfo.rcWork;
        RECT rcMonitorArea = monitorInfo.rcMonitor;
        mmi.ptMaxPosition.x = Math.Abs(rcWorkArea.left - rcMonitorArea.left) - thickness;
        mmi.ptMaxPosition.y = Math.Abs(rcWorkArea.top - rcMonitorArea.top) - thickness;
        mmi.ptMaxSize.x = Math.Abs(rcWorkArea.right - rcWorkArea.left) + 2 * thickness; 
        mmi.ptMaxSize.y = Math.Abs(rcWorkArea.bottom - rcWorkArea.top) + 2 * thickness;
    }

    Marshal.StructureToPtr(mmi, lParam, true);
}

下面的屏幕截圖顯示了如何在水平方向正確展開，但由於某種原因，它在垂直方向上不會拉伸。

Answer 1

我嘗試通過更新MINMAXINFO.ptMaxTrackSize嘗試以下代碼，並且可以正常工作。 這里也描述了相關的問題： 可以將窗口的大小調整為超過屏幕大小/屏幕外大小嗎？

private static void WmGetMinMaxInfo(System.IntPtr hwnd, System.IntPtr lParam) {     
    MINMAXINFO mmi = (MINMAXINFO)Marshal.PtrToStructure(lParam, typeof(MINMAXINFO));

    // Adjust the maximized size and position to fit the work area of the correct monitor
    int MONITOR_DEFAULTTONEAREST =0x00000002;
    System.IntPtr monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);

    if (monitor != System.IntPtr.Zero) {
        MONITORINFO monitorInfo = new MONITORINFO();
        GetMonitorInfo(monitor, monitorInfo);
        RECT rcWorkArea = monitorInfo.rcWork;
        RECT rcMonitorArea = monitorInfo.rcMonitor;
        mmi.ptMaxPosition.x = Math.Abs(rcWorkArea.left - rcMonitorArea.left) - thickness;
        mmi.ptMaxPosition.y = Math.Abs(rcWorkArea.top - rcMonitorArea.top) - thickness;
        mmi.ptMaxSize.x = Math.Abs(rcWorkArea.right - rcWorkArea.left) + 2 * thickness; 
        mmi.ptMaxSize.y = Math.Abs(rcWorkArea.bottom - rcWorkArea.top) + 2 * thickness;
        mmi.ptMaxTrackSize = mmi.ptMaxSize;
    }

    Marshal.StructureToPtr(mmi, lParam, true);
}