public IDictionary <IntPtr, string> GetOpenWindows()
{
var shellWindow = User32Wrapper.GetShellWindow();
var windows = new Dictionary <IntPtr, string>();
User32Wrapper.EnumWindows(delegate(IntPtr hWnd, int lParam)
{
if (hWnd == shellWindow)
{
return(true);
}
if (!User32Wrapper.IsWindowVisible(hWnd))
{
return(true);
}
var length = User32Wrapper.GetWindowTextLength(hWnd);
if (length == 0)
{
return(true);
}
var builder = new StringBuilder(length);
User32Wrapper.GetWindowText(hWnd, builder, length + 1);
windows[hWnd] = builder.ToString();
return(true);
}, 0);
return(windows);
}
public static int GetMonitorCount()
{
//bool Callback(IntPtr hDesktop, IntPtr hdc, ref Rectangle prect, int d) => ++monCount > 0;
//this will enumerate all displays and call MonitorEnum for each of them
//=> _screenConfig will be updated
_screenConfigs.Clear();
User32Wrapper.EnumDisplayMonitors(IntPtr.Zero, IntPtr.Zero, MonitorEnum, 0);
return(_screenConfigs.Count);
}
private static bool MonitorEnum(IntPtr hMonitor, IntPtr hdcMonitor, ref Rectangle lprcMonitor, IntPtr dwData)
{
var mi = new ScreenInfo();
mi.Size = (uint)Marshal.SizeOf(mi);
User32Wrapper.GetMonitorInfo(hMonitor, ref mi);
//think of _screenConfigs as a dictionary, where the key is the handle, so that
//it keeps a record of all screens, just in case it's used again in that session
var screenDetail = new ScreenDetail {
Handle = hMonitor, Info = mi
};
_screenConfigs.SafeAdd(hMonitor, screenDetail);
return(true);
}
private void RestoreWindowsPositions()
{
var screenCount = GetMonitorCount();
if (!_screenWindowLayout.ContainsKey(screenCount))
{
return;
}
foreach (var windowsPosition in _screenWindowLayout[screenCount])
{
// skip minimized windows
var windowRect = windowsPosition.Position;
User32Wrapper.SetWindowPos(windowsPosition.WHandle, (IntPtr)SpecialWindowHandles.HWND_NOTOPMOST, windowRect.Left,
windowRect.Top, windowRect.Right - windowRect.Left, windowRect.Bottom - windowRect.Top,
SetWindowPosFlags.ShowWindow);
}
}
private void SaveWindowsPositions()
{
var screenCount = GetMonitorCount();
var windowConfiguration = new List <WindowInfo>();
foreach (var window in GetOpenWindows())
{
var handle = window.Key;
var windowRect = new Rectangle();
User32Wrapper.GetWindowRect(handle, ref windowRect);
//var monitorHandle = User32Wrapper.MonitorFromRect(ref windowRect, MONITOR_DEFAULTTONEAREST);
windowConfiguration.Add(new WindowInfo {
WHandle = handle, Position = windowRect
});
}
_screenWindowLayout.SafeAdd(screenCount, windowConfiguration);
}