如何将 window 恢复到原始状态（与之前相同的高度和宽度）？
How to restore a window to its orginal state(the same heigth and width as it's before)?
此处（示例程序下方）如果调整记事本大小--> 最大化然后最小化。 window 位置（最大化）未保留。
我想保留 window 最小化前的位置。
我已经尝试了下面的代码。请帮助。
public 部分 class Form1 : 表格
{
public 表格 1()
{
初始化组件();
}
private readonly IntPtr HWND_TOPMOST = new IntPtr(0);
private void button1_Click(object sender, EventArgs e)
{
Process[] Processes = Process.GetProcessesByName("notepad");
string processString = string.Format("Untitled - Notepad");
IntPtr res;
foreach (Process theprocess in Processes)
{
if (theprocess.MainWindowTitle.Contains(processString))
{
if (theprocess.MainWindowHandle == IntPtr.Zero)
{
continue;
}
WindowsNativeCalls.SetActiveWindow(theprocess.MainWindowHandle);
if (theprocess.MainWindowHandle != IntPtr.Zero)
{
if (theprocess.MainWindowTitle.Contains(processString))
{
WindowsNativeCalls.WINDOWPLACEMENT placement = new WindowsNativeCalls.WINDOWPLACEMENT();
WindowsNativeCalls.GetWindowPlacement(theprocess.MainWindowHandle, ref placement);
switch (placement.showCmd)
{
case 1:// SW_NORMAL
case 3:// SW_MAXIMIZE does the job of bring to front
WindowsNativeCalls.SetWindowPos(theprocess.MainWindowHandle, HWND_TOPMOST, 0, 0, 0, 0, WindowsNativeCalls.SWP_NOMOVE | WindowsNativeCalls.SWP_NOSIZE | WindowsNativeCalls.SWP_SHOWWINDOW);
break;
case 2: // SW_SHOWMINIMIZED
placement.showCmd = 9;
WindowsNativeCalls.SetWindowPlacement(theprocess.MainWindowHandle, ref placement);
//res = WindowsNativeCalls.SendMessage(theprocess.MainWindowHandle, WindowsNativeCalls.WM_SYSCOMMAND, (IntPtr)WindowsNativeCalls.SW_SHOWNORMAL, IntPtr.Zero);
break;
}
}
}
}
}
}
}
public class WindowsNativeCalls
{
#region 字段
/// <summary>
/// Hide Window
/// </summary>
public const int SW_HIDE = 0;
/// <summary>
/// Show Normal
/// </summary>
public const int SW_SHOWNORMAL = 1;
/// <summary>
/// Minimize Window
/// </summary>
public const int SW_SHOWMINIMIZED = 2;
/// <summary>
/// Maxiize Window
/// </summary>
public const int SW_SHOWMAXIMIZED = 3;
/// <summary>
/// Activate Window
/// </summary>
public const int SW_SHOWNOACTIVATE = 4;
/// <summary>
/// Restore Window
/// </summary>
public const int SW_RESTORE = 9;
/// <summary>
/// SW_SHOW
/// </summary>
public const int SW_SHOW = 5;
/// <summary>
/// Default Window
/// </summary>
public const int SW_SHOWDEFAULT = 10;
/// <summary>
/// Close Windows message
/// </summary>
public const uint WM_CLOSE = 0x10;
/// <summary>
/// Screen Window Position to No Size Change
/// </summary>
public const UInt32 SWP_NOSIZE = 0x0001;
/// <summary>
/// Screen Window Position to No Move Change
/// </summary>
public const UInt32 SWP_NOMOVE = 0x0002;
/// <summary>
/// Screen Window Position to Show Window
/// </summary>
public const UInt32 SWP_SHOWWINDOW = 0x0040;
/// <summary>
/// Maximize Window in Graphics mode
/// </summary>
public const int SC_MAXIMIZE = 0xF030;
/// <summary>
/// Resize Windows message
/// </summary>
public const uint WM_SYSCOMMAND = 0x0112;
public struct POINTAPI
{
public int x;
public int y;
}
public struct RECT
{
public int left;
public int top;
public int right;
public int bottom;
}
public struct WINDOWPLACEMENT
{
public int length;
public int flags;
public int showCmd;
public POINTAPI ptMinPosition;
public POINTAPI ptMaxPosition;
public RECT rcNormalPosition;
}
#endregion
#region DllImport Functions
/// <summary>
/// Sets the show state of a window created.
/// </summary>
/// <param name="hWnd">Window Handle</param>
/// <param name="nCmdShow">Show state</param>
/// <returns>Returns True if successful</returns>
[DllImport("user32.dll")]
public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);
/// <summary>
/// Sets window in Forefront and activates it
/// </summary>
/// <param name="hWnd">Window Handle</param>
/// <returns>Returns True if successfu</returns>
[DllImport("user32.dll")]
public static extern bool SetForegroundWindow(IntPtr hWnd);
/// <summary>
/// Sets the show state of a window created.
/// </summary>
/// <param name="hWnd">Window Handle</param>
/// <param name="nCmdShow">Show state</param>
/// <returns>Returns True if successful</returns>
[DllImport("user32.dll")]
public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll")]
public static extern bool SetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);
[DllImport("user32.dll")]
public static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
public static extern int GetWindowText(IntPtr hWnd, System.Text.StringBuilder text, int count);
[DllImport("user32.dll")]
public static extern bool IsIconic(IntPtr hWnd);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
public static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumWindows(EnumedWindow lpEnumFunc, ArrayList lParam);
public delegate bool EnumedWindow(IntPtr handleWindow, ArrayList handles);
[DllImport("user32")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumChildWindows(IntPtr window, EnumedWindow callback, ArrayList lParam);
[DllImport("user32.dll")]
public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr SetActiveWindow(IntPtr hWnd);
[StructLayout(LayoutKind.Sequential)]
public struct WINDOWINFO
{
public uint cbSize;
public RECT rcWindow;
public RECT rcClient;
public uint dwStyle;
public uint dwExStyle;
public uint dwWindowStatus;
public uint cxWindowBorders;
public uint cyWindowBorders;
public ushort atomWindowType;
public ushort wCreatorVersion;
public WINDOWINFO(Boolean? filler)
: this()
{
cbSize = (UInt32)(Marshal.SizeOf(typeof(WINDOWINFO)));
}
}
[DllImport("user32.dll", SetLastError = true)]
public static extern bool GetWindowInfo(IntPtr hwnd, ref WINDOWINFO pwi);
#endregion
}
如果您希望 window 使用其之前的位置，请不要通过调用 SetWindowPos().
覆盖 window 的位置信息
相反，只需使用适当的命令（即 SW_MINIMIZE）调用 ShowWindow() 来最小化 window。那么当你恢复它的时候，它之前的位置信息还在。
<旁白>
顺便说一下，您的代码检查 null 的 window 句柄和 两次 的 window 标题有什么特别的原因吗？
switch (placement.showCmd)
{
case 2: // Activates and displays the window -- This case only when the window is minimized.
WindowsNativeCalls.ShowWindow(theprocess.MainWindowHandle, WindowsNativeCalls.SW_RESTORE);
break;
default: // Bring to Front - For all other cases
WindowsNativeCalls.SetWindowPos(theprocess.MainWindowHandle, HWND_TOPMOST, 0, 0, 0, 0, WindowsNativeCalls.SWP_NOMOVE | WindowsNativeCalls.SWP_NOSIZE | WindowsNativeCalls.SWP_SHOWWINDOW);
break;
}
此处（示例程序下方）如果调整记事本大小--> 最大化然后最小化。 window 位置（最大化）未保留。
我想保留 window 最小化前的位置。
我已经尝试了下面的代码。请帮助。
public 部分 class Form1 : 表格 { public 表格 1() { 初始化组件(); }
private readonly IntPtr HWND_TOPMOST = new IntPtr(0);
private void button1_Click(object sender, EventArgs e)
{
Process[] Processes = Process.GetProcessesByName("notepad");
string processString = string.Format("Untitled - Notepad");
IntPtr res;
foreach (Process theprocess in Processes)
{
if (theprocess.MainWindowTitle.Contains(processString))
{
if (theprocess.MainWindowHandle == IntPtr.Zero)
{
continue;
}
WindowsNativeCalls.SetActiveWindow(theprocess.MainWindowHandle);
if (theprocess.MainWindowHandle != IntPtr.Zero)
{
if (theprocess.MainWindowTitle.Contains(processString))
{
WindowsNativeCalls.WINDOWPLACEMENT placement = new WindowsNativeCalls.WINDOWPLACEMENT();
WindowsNativeCalls.GetWindowPlacement(theprocess.MainWindowHandle, ref placement);
switch (placement.showCmd)
{
case 1:// SW_NORMAL
case 3:// SW_MAXIMIZE does the job of bring to front
WindowsNativeCalls.SetWindowPos(theprocess.MainWindowHandle, HWND_TOPMOST, 0, 0, 0, 0, WindowsNativeCalls.SWP_NOMOVE | WindowsNativeCalls.SWP_NOSIZE | WindowsNativeCalls.SWP_SHOWWINDOW);
break;
case 2: // SW_SHOWMINIMIZED
placement.showCmd = 9;
WindowsNativeCalls.SetWindowPlacement(theprocess.MainWindowHandle, ref placement);
//res = WindowsNativeCalls.SendMessage(theprocess.MainWindowHandle, WindowsNativeCalls.WM_SYSCOMMAND, (IntPtr)WindowsNativeCalls.SW_SHOWNORMAL, IntPtr.Zero);
break;
}
}
}
}
}
}
}
public class WindowsNativeCalls { #region 字段
/// <summary>
/// Hide Window
/// </summary>
public const int SW_HIDE = 0;
/// <summary>
/// Show Normal
/// </summary>
public const int SW_SHOWNORMAL = 1;
/// <summary>
/// Minimize Window
/// </summary>
public const int SW_SHOWMINIMIZED = 2;
/// <summary>
/// Maxiize Window
/// </summary>
public const int SW_SHOWMAXIMIZED = 3;
/// <summary>
/// Activate Window
/// </summary>
public const int SW_SHOWNOACTIVATE = 4;
/// <summary>
/// Restore Window
/// </summary>
public const int SW_RESTORE = 9;
/// <summary>
/// SW_SHOW
/// </summary>
public const int SW_SHOW = 5;
/// <summary>
/// Default Window
/// </summary>
public const int SW_SHOWDEFAULT = 10;
/// <summary>
/// Close Windows message
/// </summary>
public const uint WM_CLOSE = 0x10;
/// <summary>
/// Screen Window Position to No Size Change
/// </summary>
public const UInt32 SWP_NOSIZE = 0x0001;
/// <summary>
/// Screen Window Position to No Move Change
/// </summary>
public const UInt32 SWP_NOMOVE = 0x0002;
/// <summary>
/// Screen Window Position to Show Window
/// </summary>
public const UInt32 SWP_SHOWWINDOW = 0x0040;
/// <summary>
/// Maximize Window in Graphics mode
/// </summary>
public const int SC_MAXIMIZE = 0xF030;
/// <summary>
/// Resize Windows message
/// </summary>
public const uint WM_SYSCOMMAND = 0x0112;
public struct POINTAPI
{
public int x;
public int y;
}
public struct RECT
{
public int left;
public int top;
public int right;
public int bottom;
}
public struct WINDOWPLACEMENT
{
public int length;
public int flags;
public int showCmd;
public POINTAPI ptMinPosition;
public POINTAPI ptMaxPosition;
public RECT rcNormalPosition;
}
#endregion
#region DllImport Functions
/// <summary>
/// Sets the show state of a window created.
/// </summary>
/// <param name="hWnd">Window Handle</param>
/// <param name="nCmdShow">Show state</param>
/// <returns>Returns True if successful</returns>
[DllImport("user32.dll")]
public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);
/// <summary>
/// Sets window in Forefront and activates it
/// </summary>
/// <param name="hWnd">Window Handle</param>
/// <returns>Returns True if successfu</returns>
[DllImport("user32.dll")]
public static extern bool SetForegroundWindow(IntPtr hWnd);
/// <summary>
/// Sets the show state of a window created.
/// </summary>
/// <param name="hWnd">Window Handle</param>
/// <param name="nCmdShow">Show state</param>
/// <returns>Returns True if successful</returns>
[DllImport("user32.dll")]
public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll")]
public static extern bool SetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);
[DllImport("user32.dll")]
public static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
public static extern int GetWindowText(IntPtr hWnd, System.Text.StringBuilder text, int count);
[DllImport("user32.dll")]
public static extern bool IsIconic(IntPtr hWnd);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
public static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumWindows(EnumedWindow lpEnumFunc, ArrayList lParam);
public delegate bool EnumedWindow(IntPtr handleWindow, ArrayList handles);
[DllImport("user32")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumChildWindows(IntPtr window, EnumedWindow callback, ArrayList lParam);
[DllImport("user32.dll")]
public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr SetActiveWindow(IntPtr hWnd);
[StructLayout(LayoutKind.Sequential)]
public struct WINDOWINFO
{
public uint cbSize;
public RECT rcWindow;
public RECT rcClient;
public uint dwStyle;
public uint dwExStyle;
public uint dwWindowStatus;
public uint cxWindowBorders;
public uint cyWindowBorders;
public ushort atomWindowType;
public ushort wCreatorVersion;
public WINDOWINFO(Boolean? filler)
: this()
{
cbSize = (UInt32)(Marshal.SizeOf(typeof(WINDOWINFO)));
}
}
[DllImport("user32.dll", SetLastError = true)]
public static extern bool GetWindowInfo(IntPtr hwnd, ref WINDOWINFO pwi);
#endregion
}
如果您希望 window 使用其之前的位置，请不要通过调用 SetWindowPos().
相反，只需使用适当的命令（即 SW_MINIMIZE）调用 ShowWindow() 来最小化 window。那么当你恢复它的时候，它之前的位置信息还在。
<旁白>
顺便说一下，您的代码检查 null 的 window 句柄和 两次 的 window 标题有什么特别的原因吗？
switch (placement.showCmd)
{
case 2: // Activates and displays the window -- This case only when the window is minimized.
WindowsNativeCalls.ShowWindow(theprocess.MainWindowHandle, WindowsNativeCalls.SW_RESTORE);
break;
default: // Bring to Front - For all other cases
WindowsNativeCalls.SetWindowPos(theprocess.MainWindowHandle, HWND_TOPMOST, 0, 0, 0, 0, WindowsNativeCalls.SWP_NOMOVE | WindowsNativeCalls.SWP_NOSIZE | WindowsNativeCalls.SWP_SHOWWINDOW);
break;
}