public static void PopupHotkeyHandler()
{
// Prevent duplicates
var popups = GetOpenPopups();
if (popups != null && popups.Any(p => p is PopupControl))
{
return;
}
var info = new WinApiProvider.GUITHREADINFO();
info.cbSize = Marshal.SizeOf(info);
if (WinApiProvider.GetGUIThreadInfo(0, ref info))
{
var hwndFocus = info.hwndFocus;
var caretRect = GetAccessibleCaretRect(hwndFocus);
var popup = (Application.Current as App).Host.Services.GetService(typeof(PopupControl)) as PopupControl;
// Obtain popup handle for placement
//var popupRect = new WinApiProvider.RECT();
//WinApiProvider.GetWindowRect(popupHandle, ref popupRect);
if (!RectValid(caretRect))
{
// Can't accquire caret placement
caretRect = GetWinApiCaretRect(hwndFocus);
if (!RectValid(caretRect))
{
caretRect = new WinApiProvider.RECT()
{
left = (int)(SystemParameters.PrimaryScreenWidth - popup.Width),
top = (int)(SystemParameters.PrimaryScreenHeight - popup.Height),
right = (int)SystemParameters.PrimaryScreenWidth,
bottom = (int)SystemParameters.PrimaryScreenHeight
};
}
}
// https://stackoverflow.com/questions/1918877/how-can-i-get-the-dpi-in-wpf
// VisualTreeHelper.GetDpi(Visual visual)
var dpiAtPoint = DpiUtilities.GetDpiForNearestMonitor(caretRect.right, caretRect.bottom);
popup.HorizontalOffset = caretRect.right * DpiUtilities.DefaultDpiX / dpiAtPoint;
popup.VerticalOffset = caretRect.bottom * DpiUtilities.DefaultDpiY / dpiAtPoint;
popup.IsOpen = true;
// OK caret placement
//WinApiProvider.SetWindowPos(
// popup.Handle,
// IntPtr.Zero,
// caretRect.right,
// caretRect.bottom,
// (int)popup.Width,
// (int)popup.Height,
// WinApiProvider.SWP_NOZORDER);
}
}
private static bool RectValid(WinApiProvider.RECT rect)
{
return(rect.left != 0 && rect.top != 0 && rect.right != 0 && rect.bottom != 0);
}
