public Pen(int penStyle, int width, uint colorref, Guid aGuid)
{
fLogPen = new LOGPEN();
fLogPen.lopnColor = colorref;
fLogPen.lopnStyle = penStyle;
fLogPen.lopnWidth = width;
fGuid = aGuid;
}
public unsafe static COLORREF GetPenColor(PenHandle pen)
{
var penType = Imports.GetObjectType((IntPtr)pen);
switch (penType)
{
case ObjectType.Pen:
LOGPEN logPen = new LOGPEN();
int size = sizeof(LOGPEN);
if (Imports.GetObjectW(pen, size, &logPen) == size)
{
return(logPen.lopnColor);
}
break;
case ObjectType.ExtendedPen:
BufferHelper.BufferInvoke((HeapBuffer buffer) =>
{
size = Imports.GetObjectW(pen, 0, null);
if (size == 0)
{
throw new InvalidOperationException();
}
buffer.EnsureByteCapacity((ulong)size);
size = Imports.GetObjectW(pen, size, buffer.VoidPointer);
if (size < sizeof(EXTLOGPEN))
{
throw new InvalidOperationException();
}
return(((EXTLOGPEN *)buffer.VoidPointer)->elpColor);
});
break;
}
throw new InvalidOperationException();
}
public static extern IntPtr CreatePenIndirect([In] ref LOGPEN plpen);
public HCPen()
{
FLogPen = new LOGPEN();
ReCreateHandle();
}
public static int GetObject(HandleRef hObject, LOGPEN lp)
{
return GetObject(hObject, Marshal.SizeOf(typeof(LOGPEN)), lp);
}
public static extern int CreatePenIndirect(
ref LOGPEN lplogpen
);
