IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == Win32.WM_MOUSEACTIVATE)
{
handled = true;
return(new IntPtr(Win32.MA_NOACTIVATE));
}
else if (msg == Win32.WM_ACTIVATE)
{
SetZOrder();
}
else if (msg == Win32.WM_GETMINMAXINFO)
{
unsafe {
MINMAXINFO *minMaxInfo = (MINMAXINFO *)lParam;
minMaxInfo->ptMinTrackSize = new POINT()
{
X = 0, Y = 0
};
}
// A safe inefficient version for the unsafe block above
//var minMaxInfo = (MINMAXINFO)Marshal.PtrToStructure(lParam, typeof (MINMAXINFO));
//minMaxInfo.ptMinTrackSize = new POINT();
//Marshal.StructureToPtr(minMaxInfo, lParam, true);
}
else if (msg == Win32.WM_WINDOWPOSCHANGED)
{
UpdatePosition();
}
return(IntPtr.Zero);
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == Win32.WM_ACTIVATE)
{
if (Owned)
{
m_hwndAdornerGroup.ActivateInGroupLimits(this);
}
}
else if (msg == Win32.WM_GETMINMAXINFO)
{
unsafe
{
MINMAXINFO *minMaxInfo = (MINMAXINFO *)lParam;
minMaxInfo->ptMinTrackSize = new POINT()
{
X = 0, Y = 0
};
}
// A safe inefficient version for the unsafe block above
//var minMaxInfo = (MINMAXINFO)Marshal.PtrToStructure(lParam, typeof (MINMAXINFO));
//minMaxInfo.ptMinTrackSize = new POINT();
//Marshal.StructureToPtr(minMaxInfo, lParam, true);
}
return(IntPtr.Zero);
}
protected override void WndProc(ref Message m)
{
bool handled = false;
if (m.MessageId == WindowMessages.WM_CLOSE)
{
Close();
}
else if (m.MessageId == WindowMessages.WM_DESTROY)
{
OnFormClosed(EventArgs.Empty);
}
else if (m.MessageId == WindowMessages.WM_GETMINMAXINFO)
{
unsafe
{
MINMAXINFO *sizeInfo = (MINMAXINFO *)m.LParam;
sizeInfo->ptMinTrackSize = new Point(MinimumSize.width, MinimumSize.height);
sizeInfo->ptMaxTrackSize = new Point(MaximumSize.width, MaximumSize.height);
}
handled = true;
}
if (!handled)
{
base.WndProc(ref m);
}
}
private unsafe bool HandleMinMaxSizes(IntPtr lParam)
{
bool isHandled = false;
MINMAXINFO *mmi = (MINMAXINFO *)lParam;
if (!_options.MinimumSize.IsEmpty)
{
mmi->ptMinTrackSize.X = _options.MinimumSize.Width;
mmi->ptMinTrackSize.Y = _options.MinimumSize.Height;
isHandled = true;
}
if (!_options.MaximumSize.IsEmpty)
{
mmi->ptMaxTrackSize.X = _options.MaximumSize.Width;
mmi->ptMaxTrackSize.Y = _options.MaximumSize.Height;
isHandled = true;
}
// https://stackoverflow.com/questions/39816031/maximize-window-maintaining-taskbar-limits
if (_options.WindowFrameless && _options.WindowState == WindowState.Maximize)
{
IntPtr handle = MonitorFromWindow(GetDesktopWindow(), MONITOR.DEFAULTTONEAREST);
MONITORINFOEXW monInfo = new MONITORINFOEXW(null);
monInfo.cbSize = (uint)Marshal.SizeOf(monInfo);
var captionHeight = GetSystemMetrics(SystemMetric.SM_CYCAPTION);
GetMonitorInfoW(handle, ref monInfo);
var workArea = monInfo.rcWork;
var monitorArea = monInfo.rcMonitor;
mmi->ptMaxPosition.X = Math.Abs(workArea.left - monitorArea.left) - captionHeight / 2;
mmi->ptMaxPosition.Y = Math.Abs(workArea.top - monitorArea.top);
mmi->ptMaxSize.X = Math.Abs(workArea.right - workArea.left) + captionHeight;
mmi->ptMaxSize.Y = Math.Abs(workArea.bottom - workArea.top) + captionHeight;
isHandled = true;
}
return(isHandled);
}
private unsafe bool HandleMinMaxSizes(IntPtr lParam)
{
bool isHandled = false;
MINMAXINFO *mmi = (MINMAXINFO *)lParam;
if (!_options.MinimumSize.IsEmpty)
{
mmi->ptMinTrackSize.X = _options.MinimumSize.Width;
mmi->ptMinTrackSize.Y = _options.MinimumSize.Height;
isHandled = true;
}
if (!_options.MaximumSize.IsEmpty)
{
mmi->ptMaxTrackSize.X = _options.MaximumSize.Width;
mmi->ptMaxTrackSize.Y = _options.MaximumSize.Height;
isHandled = true;
}
return(isHandled);
}
private IntPtr ProcessWindowsMessage(IntPtr hWnd, WindowsMessages message, IntPtr wParam, IntPtr lParam)
{
switch ((WindowsMessages)message)
{
case WindowsMessages.CREATE:
this.handle = hWnd;
Created?.Invoke();
break;
case WindowsMessages.DESTROY:
Destroyed?.Invoke();
PostQuitMessage(0);
break;
case WindowsMessages.PAINT:
break;
case WindowsMessages.SIZE:
Resized?.Invoke(new Vector2((float)(((uint)lParam) & 0xffff), (float)(((uint)lParam) >> 16)));
break;
case WindowsMessages.UNICHAR:
DispatchCharEvent(CharEventType.Unicode, (char)wParam);
break;
case WindowsMessages.CHAR:
char @char = (char)wParam;
if (0 <= @char && @char < 0x80)
{
Debug.Assert(charQueue.Count == 0);
DispatchCharEvent(CharEventType.Char, @char);
}
else
{
charQueue.Add(@char);
if (charQueue.Count == 2)
{
Encoding encoding = Encoding.GetEncoding("GB2312");
var @string = encoding.GetString(new byte[] { (byte)charQueue[0], (byte)charQueue[1] });
Debug.Assert(@string.Length == 1);
charQueue.Clear();
DispatchCharEvent(CharEventType.Char, @string[0]);
}
}
break;
case WindowsMessages.KEYDOWN:
case WindowsMessages.SYSKEYDOWN:
case WindowsMessages.KEYUP:
case WindowsMessages.SYSKEYUP:
var keyboardEventType = ((uint)message & 1) == 0 ? KeyboardEventType.KeyDown : KeyboardEventType.KeyUp;
VirtualKeys virtualKeys = (VirtualKeys)wParam;
bool extended = ((ulong)lParam & 0x01000000) != 0;
switch (virtualKeys)
{
case VirtualKeys.Shift:
ulong scancode = ((ulong)lParam & 0x00ff0000) >> 16;
virtualKeys = (VirtualKeys)MapVirtualKey((uint)scancode, MapVirtualKeyMapTypes.MAPVK_VSC_TO_VK_EX);
break;
case VirtualKeys.Control:
virtualKeys = extended ? VirtualKeys.RightControl : VirtualKeys.LeftControl;
break;
case VirtualKeys.Menu:
virtualKeys = extended ? VirtualKeys.RightMenu : VirtualKeys.LeftMenu;
break;
}
this.DispatchKeyboradEvent(keyboardEventType, virtualKeys);
break;
case WindowsMessages.LBUTTONDOWN:
this.DispatchMouseEvent(MouseEventType.MouseDown, VirtualKeys.LeftButton);
break;
case WindowsMessages.RBUTTONDOWN:
this.DispatchMouseEvent(MouseEventType.MouseDown, VirtualKeys.RightButton);
break;
case WindowsMessages.MBUTTONDOWN:
this.DispatchMouseEvent(MouseEventType.MouseDown, VirtualKeys.MiddleButton);
break;
case WindowsMessages.LBUTTONUP:
this.DispatchMouseEvent(MouseEventType.MouseUp, VirtualKeys.LeftButton);
break;
case WindowsMessages.RBUTTONUP:
this.DispatchMouseEvent(MouseEventType.MouseUp, VirtualKeys.RightButton);
break;
case WindowsMessages.MBUTTONUP:
this.DispatchMouseEvent(MouseEventType.MouseUp, VirtualKeys.MiddleButton);
break;
case WindowsMessages.GETMINMAXINFO:
unsafe
{
MINMAXINFO *mminfo = (MINMAXINFO *)(lParam.ToPointer());
mminfo->ptMinTrackSize.X = 640;
mminfo->ptMinTrackSize.Y = 480;
}
break;
}
return(DefWindowProc(hWnd, (WindowsMessages)message, wParam, lParam));
}
