internal DpiChangedEventArgs(int old, Message m)
{
DeviceDpiOld = old;
DeviceDpiNew = PARAM.SignedLOWORD(m.WParam);
Debug.Assert(PARAM.SignedHIWORD(m.WParam) == DeviceDpiNew, "Non-square pixels!");
RECT suggestedRect = Marshal.PtrToStructure <RECT>(m.LParam);
SuggestedRectangle = Rectangle.FromLTRB(suggestedRect.left, suggestedRect.top, suggestedRect.right, suggestedRect.bottom);
}
/// <summary>
/// Parameter units are pixels(dots) per inch.
/// </summary>
internal unsafe DpiChangedEventArgs(int old, Message m)
{
DeviceDpiOld = old;
DeviceDpiNew = PARAM.SignedLOWORD(m.WParamInternal);
Debug.Assert(PARAM.SignedHIWORD(m.WParamInternal) == DeviceDpiNew, "Non-square pixels!");
RECT suggestedRect = *(RECT *)m.LParamInternal;
SuggestedRectangle = Rectangle.FromLTRB(suggestedRect.left, suggestedRect.top, suggestedRect.right, suggestedRect.bottom);
}
private Point GetPositionFromCharIndex(int index)
{
if (index < 0 || index >= Text.Length)
{
return(Point.Empty);
}
int i = (int)SendMessageW(_owningChildEdit, (WM)EM.POSFROMCHAR, index);
return(new Point(PARAM.SignedLOWORD(i), PARAM.SignedHIWORD(i)));
}
public void InitiateWindowDrag(IntPtr hWnd, IntPtr lParam)
{
if (_dragWindowInfo != null)
{
ReleaseCapture();
_dragWindowInfo.Reset();
var dragPoint = new POINT();
dragPoint.x = PARAM.SignedLOWORD(lParam);
dragPoint.y = PARAM.SignedHIWORD(lParam);
var windowTopLeftPoint = new POINT();
if (_dragWindowInfo.IsCursorInDraggableRegion(ref dragPoint, ref windowTopLeftPoint))
{
SetCapture(hWnd);
_dragWindowInfo.DragInitiated = true;
_dragWindowInfo.DragPoint = dragPoint;
_dragWindowInfo.DragWindowLocation = windowTopLeftPoint;
InstallDragMouseHook();
}
}
}
public unsafe void SignedLOWORD_x64_Result()
{
Assert.Equal((short)0x0304, PARAM.SignedLOWORD(unchecked ((nint)0x0506070801020304)));
Assert.Equal(unchecked ((short)0xF3F4), PARAM.SignedLOWORD(unchecked ((nint)0xF5F6F7F8F1F2F3F4)));
}
public unsafe void SignedLOWORD_x32_Result()
{
Assert.Equal((short)0x0304, PARAM.SignedLOWORD((nint)0x01020304));
Assert.Equal(unchecked ((short)0xF3F4), PARAM.SignedLOWORD(unchecked ((nint)0xF1F2F3F4)));
}