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User32: Added LockWorkStation, ExitWindowsEx, AdjustWindowRect[Ex], and Get/SetWindowPlacement #339

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169 changes: 163 additions & 6 deletions contrib/platform/src/com/sun/jna/platform/win32/User32.java
Original file line number Diff line number Diff line change
Expand Up @@ -40,16 +40,13 @@ public interface User32 extends StdCallLibrary, WinUser, WinNT {
* Handle for message-only window.
*/
public static final HWND HWND_MESSAGE = new HWND(Pointer.createConstant(-3));

/** The cs globalclass. */
int CS_GLOBALCLASS = 0x4000;

/** The ws ex topmost. */
int WS_EX_TOPMOST = 0x00000008;

/** The ws overlapped. */
int WS_OVERLAPPED = 0x00000000;


/** The hRecipient parameter is a window handle. */
int DEVICE_NOTIFY_WINDOW_HANDLE = 0x00000000;

Expand Down Expand Up @@ -1689,7 +1686,8 @@ HDEVNOTIFY RegisterDeviceNotification(HANDLE hRecipient,
boolean UnregisterDeviceNotification(HDEVNOTIFY Handle);

/**
* Defines a new window message that is guaranteed to be unique throughout the system. The message value can be used when sending or posting messages.
* Defines a new window message that is guaranteed to be unique throughout the system.
* The message value can be used when sending or posting messages.
*
* @param string
* The message to be registered.
Expand Down Expand Up @@ -1778,6 +1776,7 @@ HDEVNOTIFY RegisterDeviceNotification(HANDLE hRecipient,
* region of a device context. EnumDisplayMonitors calls an application-defined MonitorEnumProc callback
* function once for each monitor that is enumerated. Note that GetSystemMetrics (SM_CMONITORS) counts
* only the display monitors.
*
* @param hdc A handle to a display device context that defines the visible region of interest. If this
* parameter is NULL, the hdcMonitor parameter passed to the callback function will be NULL, and
* the visible region of interest is the virtual screen that encompasses all the displays on the
Expand All @@ -1793,4 +1792,162 @@ HDEVNOTIFY RegisterDeviceNotification(HANDLE hRecipient,
* is zero.
*/
BOOL EnumDisplayMonitors(HDC hdc, RECT lprcClip, MONITORENUMPROC lpfnEnum, LPARAM dwData);

/**
* Retrieves the show state and the restored, minimized, and maximized
* positions of the specified window.
*
* @param hwnd A handle to the window.
* @param dest A pointer to the WINDOWPLACEMENT structure that receives the
* show state and position information.
* @return The number of characters copied to the specified buffer indicates
* success. Zero indicates failure. To get extended error
* information, call GetLastError.
*/
BOOL GetWindowPlacement(HWND hwnd, WINDOWPLACEMENT lpwndpl);

/**
* Sets the show state and the restored, minimized, and maximized positions
* of the specified window.
*
* @param hwnd A handle to the window.
* @param dest A pointer to a WINDOWPLACEMENT structure that specifies the
* new show state and window positions.
* @return The number of characters copied to the specified buffer indicates
* success. Zero indicates failure. To get extended error
* information, call GetLastError.
*/
BOOL SetWindowPlacement(HWND hwnd, WINDOWPLACEMENT lpwndpl);

/**
* Calculates the required size of the window rectangle, based on the desired
* client-rectangle size. The window rectangle can then be passed to the CreateWindow
* function to create a window whose client area is the desired size.
*
* To specify an extended window style, use the AdjustWindowRectEx function.
*
* A client rectangle is the smallest rectangle that completely encloses a
* client area. A window rectangle is the smallest rectangle that completely
* encloses the window, which includes the client area and the nonclient area.
*
* The AdjustWindowRect function does not add extra space when a menu bar wraps
* to two or more rows.
*
* The AdjustWindowRect function does not take the WS_VSCROLL or WS_HSCROLL
* styles into account. To account for the scroll bars, call the GetSystemMetrics
* function with SM_CXVSCROLL or SM_CYHSCROLL.
*
* @param lpRect A pointer to a RECT structure that contains the coordinates
* of the top-left and bottom-right corners of the desired client area.
* When the function returns, the structure contains the coordinates
* of the top-left and bottom-right corners of the window to accommodate
* the desired client area.
* @param dwStyle The window style of the window whose required size is to be
* calculated. Note that you cannot specify the WS_OVERLAPPED style.
* @param bMenu Indicates whether the window has a menu.
* @return The number of characters copied to the specified buffer indicates
* success. Zero indicates failure. To get extended error
* information, call GetLastError.
*/
BOOL AdjustWindowRect(RECT lpRect, DWORD dwStyle, BOOL bMenu);

/**
* Calculates the required size of the window rectangle, based on the desired
* client-rectangle size. The window rectangle can then be passed to the CreateWindowEx
* function to create a window whose client area is the desired size.
*
* A client rectangle is the smallest rectangle that completely encloses a
* client area. A window rectangle is the smallest rectangle that completely
* encloses the window, which includes the client area and the nonclient area.
*
* The AdjustWindowRectEx function does not add extra space when a menu bar wraps
* to two or more rows.
*
* The AdjustWindowRectEx function does not take the WS_VSCROLL or WS_HSCROLL
* styles into account. To account for the scroll bars, call the GetSystemMetrics
* function with SM_CXVSCROLL or SM_CYHSCROLL.
*
* @param lpRect A pointer to a RECT structure that contains the coordinates
* of the top-left and bottom-right corners of the desired client area.
* When the function returns, the structure contains the coordinates
* of the top-left and bottom-right corners of the window to accommodate
* the desired client area.
* @param dwStyle The window style of the window whose required size is to be
* calculated. Note that you cannot specify the WS_OVERLAPPED style.
* @param bMenu Indicates whether the window has a menu.
* @param dwExStyle The extended window style of the window whose required size
* is to be calculated.
* @return The number of characters copied to the specified buffer indicates
* success. Zero indicates failure. To get extended error
* information, call GetLastError.
*/
BOOL AdjustWindowRectEx(RECT lpRect, DWORD dwStyle, BOOL bMenu, DWORD dwExStyle);

/**
* Logs off the interactive user, shuts down the system, or shuts down and restarts
* the system. It sends the WM_QUERYENDSESSION message to all applications to
* determine if they can be terminated.
*
* When this function is called, the caller must specify whether or not applications
* with unsaved changes should be forcibly closed. If the caller chooses not to force
* these applications to close and an application with unsaved changes is running on
* the console session, the shutdown will remain in progress until the user logged
* into the console session aborts the shutdown, saves changes, closes the application,
* or forces the application to close. During this period, the shutdown may not be
* aborted except by the console user, and another shutdown may not be initiated.
*
* Calling this function with the value of the uFlags parameter set to EWX_FORCE avoids
* this situation. Remember that doing this may result in loss of data.
*
* To set a shutdown priority for an application relative to other applications in the
* system, use the SetProcessShutdownParameters function.
*
* During a shutdown or log-off operation, running applications are allowed a specific
* amount of time to respond to the shutdown request. If this time expires before all
* applications have stopped, the system displays a user interface that allows the user
* to forcibly shut down the system or to cancel the shutdown request. If the EWX_FORCE
* value is specified, the system forces running applications to stop when the time expires.
*
* If the EWX_FORCEIFHUNG value is specified, the system forces hung applications to close
* and does not display the dialog box.
*
* Console processes receive a separate notification message, CTRL_SHUTDOWN_EVENT or
* CTRL_LOGOFF_EVENT, as the situation warrants. A console process routes these messages
* to its HandlerRoutine function. ExitWindowsEx sends these notification messages
* asynchronously; thus, an application cannot assume that the console notification messages
* have been handled when a call to ExitWindowsEx returns.
*
* To shut down or restart the system, the calling process must use the {@link com.sun.jna.platform.Advapi32.AdjustTokenPrivileges}
* function to enable the SE_SHUTDOWN_NAME privilege. For more information, see Running with Special Privileges.
*
* @param uFlags The shutdown type. This parameter must include one of EWX_HYBRID_SHUTDOWN,
* EWX_LOGOFF, EWX_POWEROFF, EWX_REBOOT, EWX_RESTARTAPPS, or EWX_SHUTDOWN. This
* parameter can optionally include one of EWX_FORCE or EWX_FORCEIFHUNG.
* @param dReason The reason for initiating the shutdown. This parameter must be one
* of the system shutdown reason codes. If this parameter is zero, the
* SHTDN_REASON_FLAG_PLANNED reason code will not be set and therefore the
* default action is an undefined shutdown that is logged as "No title for
* this reason could be found". By default, it is also an unplanned shutdown.
* Depending on how the system is configured, an unplanned shutdown triggers
* the creation of a file that contains the system state information, which
* can delay shutdown. Therefore, do not use zero for this parameter.
* @return If the function succeeds, the return value is nonzero. Because the function
* executes asynchronously, a nonzero return value indicates that the shutdown has been
* initiated. It does not indicate whether the shutdown will succeed. It is possible
* that the system, the user, or another application will abort the shutdown. If the
* function fails, the return value is zero. To get extended error information, call GetLastError.
*/
BOOL ExitWindowsEx(UINT uFlags, DWORD dReason);

/**
* Locks the workstation's display. Locking a workstation protects it from unauthorized use. The
* LockWorkStation function is callable only by processes running on the interactive desktop.
* In addition, the user must be logged on, and the workstation cannot already be locked.
*
* @return If the function succeeds, the return value is nonzero. Because the function executes
* asynchronously, a nonzero return value indicates that the operation has been initiated.
* It does not indicate whether the workstation has been successfully locked. If the
* function fails, the return value is zero. To get extended error information, call GetLastError.
*/
BOOL LockWorkStation();
}
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