public short GetObject(HGDIOBJ hgdiobj, short cbBuffer, uint ptr)
{
unsafe
{
var objectType = GetObjectType(hgdiobj);
switch (objectType)
{
case Win32.OBJ_PEN:
{
if (ptr == 0)
{
return((short)Marshal.SizeOf <Win16.LOGPEN>());
}
// Check if buffer big enough
if (cbBuffer < Marshal.SizeOf <Win16.LOGPEN>())
{
return(0);
}
// Get it
var lp32 = new Win32.LOGPEN();
var plp32 = &lp32;
var size = GetObject(hgdiobj, Marshal.SizeOf <Win32.LOGPEN>(), (IntPtr)plp32);
// Convert and write it back
_machine.WriteStruct(ptr, Win32.LOGPEN.To16(lp32));
return((short)Marshal.SizeOf <Win16.LOGPEN>());
}
case Win32.OBJ_BRUSH:
{
if (ptr == 0)
{
return((short)Marshal.SizeOf <Win16.LOGBRUSH>());
}
if (cbBuffer < Marshal.SizeOf <Win16.LOGBRUSH>())
{
return(0);
}
var lb32 = new Win32.LOGBRUSH();
var plb32 = &lb32;
var size = GetObject(hgdiobj, Marshal.SizeOf <Win32.LOGBRUSH>(), (IntPtr)plb32);
_machine.WriteStruct(ptr, Win32.LOGBRUSH.To16(lb32));
return((short)Marshal.SizeOf <Win16.LOGBRUSH>());
}
case Win32.OBJ_BITMAP:
{
// Just asking for size?
if (ptr == 0)
{
return((short)Marshal.SizeOf <Win16.BITMAP>());
}
// Check if buffer big enough
if (cbBuffer < Marshal.SizeOf <Win16.BITMAP>())
{
return(0);
}
// Get it
var bmp32 = new Win32.BITMAP();
var pbmp32 = &bmp32;
var size = GetObject(hgdiobj, Marshal.SizeOf <Win32.BITMAP>(), (IntPtr)pbmp32);
// Convert and write it back
_machine.WriteStruct(ptr, Win32.BITMAP.To16(bmp32));
// Return size
return((short)Marshal.SizeOf <Win16.BITMAP>());
}
case Win32.OBJ_FONT:
{
// Just asking for size?
if (ptr == 0)
{
return((short)Marshal.SizeOf <Win16.LOGFONT>());
}
// Check if buffer big enough
if (cbBuffer < Marshal.SizeOf <Win16.LOGFONT>())
{
return(0);
}
// Get it
var lf32 = new Win32.LOGFONT();
var size = GetObject(hgdiobj, Marshal.SizeOf <Win32.LOGFONT>(), out lf32);
// Convert and write it back
_machine.WriteStruct(ptr, Win32.LOGFONT.To16(lf32));
// Return size
return((short)Marshal.SizeOf <Win16.LOGFONT>());
}
default:
throw new NotImplementedException("Unsupported object type passed to GetObject");
}
}
}
static extern int GetObject(HGDIOBJ hgdiobj, int cbBuffer, IntPtr lpvObject);
static extern int GetObject(HGDIOBJ hgdiobj, int cbBuffer, out Win32.LOGFONT lpvObject);
public static extern bool DeleteObject([Destroyed] HGDIOBJ hGdiObj);
static extern uint GetObjectType(HGDIOBJ h);
// does not exist anymore in gdi32.dll
public void SetObjectOwner(HGDIOBJ hObject, uint hTask)
{
// nothing to do
return;
}
public static extern HGDIOBJ CreatePatternBrush(HGDIOBJ hBrush);
public static extern nint SelectClipRgn(HDC hDC, HGDIOBJ hRgn);
public static extern HGDIOBJ SelectObject(HDC hdc, HGDIOBJ hgdiobj);
public static extern bool InvertRgn(HDC hDC, HGDIOBJ hRgn);
public static extern bool PaintRgn(HDC hDC, HGDIOBJ hRgn);
public static extern bool FrameRgn(HDC hDC, HGDIOBJ hRgn, nint w, nint h);
public static extern bool FillRgn(HDC hDC, HGDIOBJ hRgn, HGDIOBJ hBrush);
// does not exist anymore in gdi32.dll
public bool IsGdiObject(HGDIOBJ hObject)
{
return(hObject.value != IntPtr.Zero);
}
public static extern bool UnrealizeObject(HGDIOBJ hObj);
public static extern nint CombineRgn(HGDIOBJ hrgnDest, HGDIOBJ hrgnSrc1, HGDIOBJ hrgnSrc2, nint combineMode);
public static extern void SetRectRgn(HGDIOBJ hRgn, nint l, nint t, nint r, nint b);
public static ushort To16(HGDIOBJ hObj)
{
return(Map.To16(hObj.value));
}
