如何将 WindowState 从桌面快捷方式传递到 WPF 应用程序？

Question

如何从桌面快捷方式控制 WPF 主窗口的初始 WindowState（正常、最小化、最大化）？

快捷方式属性对话框的“运行：”组合框让我可以在“正常窗口”、“最小化”和“最大化”之间进行选择。但 WPF 应用程序似乎完全忽略了此选项。使用 WinForms 可以自动支持此功能，无需额外代码。

有没有办法从启动的 WPF 进程访问此选项？我知道我可以在启动新进程时指定 ProcessStartInfo.WindowStyle 属性。但是我如何从正在启动的进程中访问此选项？

Answer 1

System.Diagnostics.Process.GetCurrentProcess().StartInfo.WindowStyle

Answer 2

使用 NativeMethods.StartupInfo.GetInitialWindowStyle() 仅获取初始窗口状态，或使用 NativeMethods.StartupInfo.FromCurrentProcess 访问全部信息。

static partial class NativeMethods
{
    public static class StartupInfo
    {
        [StructLayout(LayoutKind.Sequential)]
        public class STARTUPINFO
        {
            public readonly UInt32 cb;  
            private IntPtr lpReserved;
            [MarshalAs(UnmanagedType.LPWStr)] public readonly string lpDesktop;
            [MarshalAs(UnmanagedType.LPWStr)] public readonly string lpTitle;
            public readonly UInt32 dwX;
            public readonly UInt32 dwY;
            public readonly UInt32 dwXSize;
            public readonly UInt32 dwYSize;
            public readonly UInt32 dwXCountChars;
            public readonly UInt32 dwYCountChars;
            public readonly UInt32 dwFillAttribute;
            public readonly UInt32 dwFlags;
            [MarshalAs(UnmanagedType.U2)] public readonly UInt16 wShowWindow;
            [MarshalAs(UnmanagedType.U2)] public readonly UInt16 cbReserved2;
            private IntPtr lpReserved2;
            public readonly IntPtr hStdInput;
            public readonly IntPtr hStdOutput;
            public readonly IntPtr hStdError;
        }

        public readonly static STARTUPINFO FromCurrentProcess = null;

        const uint STARTF_USESHOWWINDOW = 0x00000001;
        const ushort SW_HIDE = 0;
        const ushort SW_SHOWNORMAL = 1;
        const ushort SW_SHOWMINIMIZED = 2;
        const ushort SW_SHOWMAXIMIZED = 3;
        const ushort SW_MINIMIZE = 6;
        const ushort SW_SHOWMINNOACTIVE = 7;
        const ushort SW_FORCEMINIMIZE = 11;

        [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        static extern void GetStartupInfoW(IntPtr startupInfoPtr);

        static StartupInfo() //Static constructor
        {
            FromCurrentProcess = new STARTUPINFO();
            int length = Marshal.SizeOf(typeof(STARTUPINFO));
            IntPtr ptr = Marshal.AllocHGlobal(length);

            Marshal.StructureToPtr(FromCurrentProcess, ptr, false);
            GetStartupInfoW(ptr);
            Marshal.PtrToStructure(ptr, FromCurrentProcess);
            Marshal.FreeHGlobal(ptr);
        }

        public static ProcessWindowStyle GetInitialWindowStyle()
        {
            if ((FromCurrentProcess.dwFlags & STARTF_USESHOWWINDOW) == 0) return ProcessWindowStyle.Normal;

            switch (FromCurrentProcess.wShowWindow)
            {
                case SW_HIDE: return ProcessWindowStyle.Hidden;
                case SW_SHOWNORMAL: return ProcessWindowStyle.Normal;
                case SW_MINIMIZE:
                case SW_FORCEMINIMIZE:
                case SW_SHOWMINNOACTIVE:
                case SW_SHOWMINIMIZED: return ProcessWindowStyle.Minimized;
                case SW_SHOWMAXIMIZED: return ProcessWindowStyle.Maximized;
                default: return ProcessWindowStyle.Normal;
            }
        }
    } 
}