static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Size:
cxBlock = lParam.LowWord / DIVISIONS;
cyBlock = lParam.HighWord / DIVISIONS;
return(0);
case WindowMessage.SetFocus:
Windows.ShowCursor(true);
return(0);
case WindowMessage.KillFocus:
Windows.ShowCursor(false);
return(0);
case WindowMessage.KeyDown:
POINT point = Windows.GetCursorPosition();
window.ScreenToClient(ref point);
int x = Math.Max(0, Math.Min(DIVISIONS - 1, point.x / cxBlock));
int y = Math.Max(0, Math.Min(DIVISIONS - 1, point.y / cyBlock));
switch ((VirtualKey)wParam)
{
case VirtualKey.Up:
y--;
break;
case VirtualKey.Down:
y++;
break;
case VirtualKey.Left:
x--;
break;
case VirtualKey.Right:
x++;
break;
case VirtualKey.Home:
x = y = 0;
break;
case VirtualKey.End:
x = y = DIVISIONS - 1;
break;
case VirtualKey.Return:
case VirtualKey.Space:
window.SendMessage(WindowMessage.LeftButtonDown, (WPARAM)MouseKey.LeftButton,
new LPARAM(y * cyBlock, x * cxBlock));
break;
}
x = (x + DIVISIONS) % DIVISIONS;
y = (y + DIVISIONS) % DIVISIONS;
point.x = x * cxBlock + cxBlock / 2;
point.y = y * cyBlock + cyBlock / 2;
window.ClientToScreen(ref point);
Windows.SetCursorPosition(point.x, point.y);
return(0);
case WindowMessage.LeftButtonDown:
x = lParam.LowWord / cxBlock;
y = lParam.HighWord / cyBlock;
if (x < DIVISIONS && y < DIVISIONS)
{
fState[x, y] ^= true;
RECT rect = new RECT
{
left = x * cxBlock,
top = y * cyBlock,
right = (x + 1) * cxBlock,
bottom = (y + 1) * cyBlock
};
window.InvalidateRectangle(rect, false);
}
else
{
ErrorMethods.MessageBeep(0);
}
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
for (x = 0; x < DIVISIONS; x++)
{
for (y = 0; y < DIVISIONS; y++)
{
dc.Rectangle(x * cxBlock, y * cyBlock,
(x + 1) * cxBlock, (y + 1) * cyBlock);
if (fState[x, y])
{
dc.MoveTo(x * cxBlock, y * cyBlock);
dc.LineTo((x + 1) * cxBlock, (y + 1) * cyBlock);
dc.MoveTo(x * cxBlock, (y + 1) * cyBlock);
dc.LineTo((x + 1) * cxBlock, y * cyBlock);
}
}
}
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Size:
cxBlock = lParam.LowWord / DIVISIONS;
cyBlock = lParam.HighWord / DIVISIONS;
return(0);
case MessageType.SetFocus:
Windows.ShowCursor(true);
return(0);
case MessageType.KillFocus:
Windows.ShowCursor(false);
return(0);
case MessageType.KeyDown:
Point point = Windows.GetCursorPosition();
window.ScreenToClient(ref point);
int x = Math.Max(0, Math.Min(DIVISIONS - 1, point.X / cxBlock));
int y = Math.Max(0, Math.Min(DIVISIONS - 1, point.Y / cyBlock));
switch ((VirtualKey)wParam)
{
case VirtualKey.Up:
y--;
break;
case VirtualKey.Down:
y++;
break;
case VirtualKey.Left:
x--;
break;
case VirtualKey.Right:
x++;
break;
case VirtualKey.Home:
x = y = 0;
break;
case VirtualKey.End:
x = y = DIVISIONS - 1;
break;
case VirtualKey.Return:
case VirtualKey.Space:
window.SendMessage(MessageType.LeftButtonDown, (WParam)MouseKey.LeftButton,
new LParam(y * cyBlock, x * cxBlock));
break;
}
x = (x + DIVISIONS) % DIVISIONS;
y = (y + DIVISIONS) % DIVISIONS;
point = new Point(x * cxBlock + cxBlock / 2, y * cyBlock + cyBlock / 2);
window.ClientToScreen(ref point);
Windows.SetCursorPosition(point);
return(0);
case MessageType.LeftButtonDown:
x = lParam.LowWord / cxBlock;
y = lParam.HighWord / cyBlock;
if (x < DIVISIONS && y < DIVISIONS)
{
fState[x, y] ^= true;
Rectangle rect = Rectangle.FromLTRB
(
x * cxBlock,
y * cyBlock,
(x + 1) * cxBlock,
(y + 1) * cyBlock
);
window.InvalidateRectangle(rect, false);
}
else
{
Windows.MessageBeep(0);
}
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
for (x = 0; x < DIVISIONS; x++)
{
for (y = 0; y < DIVISIONS; y++)
{
dc.Rectangle(new Rectangle(x * cxBlock, y * cyBlock, (x + 1) * cxBlock, (y + 1) * cyBlock));
if (fState[x, y])
{
dc.MoveTo(new Point(x * cxBlock, y * cyBlock));
dc.LineTo(new Point((x + 1) * cxBlock, (y + 1) * cyBlock));
dc.MoveTo(new Point(x * cxBlock, (y + 1) * cyBlock));
dc.LineTo(new Point((x + 1) * cxBlock, y * cyBlock));
}
}
}
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
