// NOTE: this overload is provided in case the caller doesn't have a window to send the application command from; note that this scenario isn't quite as fail-proof as providing an hwnd (since explorer.exe could be crashed, restarting, etc.)
public static MorphicResult <MorphicUnit, Win32ApiError> GenerateApplicationCommandEvent(AppCommand appCommand)
{
var taskbarHwnd = PInvoke.User32.FindWindow("Shell_TrayWnd", null);
if (taskbarHwnd == IntPtr.Zero)
{
// could not find taskbar window
var win32ErrorCode = PInvoke.Kernel32.GetLastError();
return(MorphicResult.ErrorResult(Win32ApiError.Win32Error((uint)win32ErrorCode)));
}
// NOTE: many implementations of SendMessage(...WM_APPCOMMAND) use a sourceHwnd of IntPtr.Zero; we've chosen to use the taskbar as both source and target hwnd out of an abundance of caution; if this doesn't work well in practice, try following the example of others by setting the sourceHwnd to IntPtr.Zero
return(AppCommandUtils.GenerateApplicationCommandEvent(taskbarHwnd, taskbarHwnd, appCommand));
}
public static MorphicResult <Point, Win32ApiError> GetCurrentPosition()
{
var point = new PInvoke.POINT();
var getCursorPosResult = PInvoke.User32.GetCursorPos(out point);
if (getCursorPosResult == false)
{
var win32ErrorCode = PInvoke.Kernel32.GetLastError();
if (win32ErrorCode != PInvoke.Win32ErrorCode.ERROR_SUCCESS)
{
return(MorphicResult.ErrorResult(Win32ApiError.Win32Error((uint)win32ErrorCode)));
}
}
var result = new Point(point.x, point.y);
return(MorphicResult.OkResult(result));
}
// NOTE: in the future, we may want to consider offering an animation of our cursor's move to the center of the display, via a second (options) parameter
public static MorphicResult <MorphicUnit, Win32ApiError> MoveCursorToCenterOfDisplay(Morphic.WindowsNative.Display.Display display)
{
// get the current display's bounds
// for PerMonitorV2 DPI-aware clients, this function will return the display rectangle in PHYSICAL pixels
// for non-DPI-aware clients, this function will return the display rectangle in VIRTUAL pixels
var getDisplayRectangleInPixelsResult = display.GetDisplayRectangleInPixels();
if (getDisplayRectangleInPixelsResult.IsError == true)
{
var win32ErrorCode = PInvoke.Kernel32.GetLastError();
if (win32ErrorCode != PInvoke.Win32ErrorCode.ERROR_SUCCESS)
{
return(MorphicResult.ErrorResult(Win32ApiError.Win32Error((uint)win32ErrorCode)));
}
}
var currentDisplayPhysicalBounds = getDisplayRectangleInPixelsResult.Value !;
// calculate the center point on the display
var centerX = currentDisplayPhysicalBounds.Left + (currentDisplayPhysicalBounds.Width / 2);
var centerY = currentDisplayPhysicalBounds.Top + (currentDisplayPhysicalBounds.Height / 2);
// move the mouse cursor to the center point on the display
var setCursorPosResult = PInvoke.User32.SetCursorPos(centerX, centerY);
if (setCursorPosResult == false)
{
var win32ErrorCode = PInvoke.Kernel32.GetLastError();
if (win32ErrorCode != PInvoke.Win32ErrorCode.ERROR_SUCCESS)
{
return(MorphicResult.ErrorResult(Win32ApiError.Win32Error((uint)win32ErrorCode)));
}
}
// return success
return(MorphicResult.OkResult());
}
