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[Win32SS] Implement EngCreate/DeletePalette.

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Safe to be called from user side without UMPD support.
This commit is contained in:
jimtabor 2019-09-03 14:36:20 -05:00
parent dcd463ba98
commit c698eff041
2 changed files with 56 additions and 25 deletions
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25
win32ss/gdi/eng/umpdstubs.c
View file

@ -211,21 +211,6 @@ NtGdiEngCreateDeviceSurface(
return NULL;
}
__kernel_entry
HPALETTE
APIENTRY
NtGdiEngCreatePalette(
_In_ ULONG iMode,
_In_ ULONG cColors,
_In_ ULONG *pulColors,
_In_ FLONG flRed,
_In_ FLONG flGreen,
_In_ FLONG flBlue)
{
UNIMPLEMENTED;
return NULL;
}
__kernel_entry
NTSTATUS
APIENTRY
@ -236,16 +221,6 @@ NtGdiEngDeleteClip(
return STATUS_NOT_IMPLEMENTED;
}
__kernel_entry
BOOL
APIENTRY
NtGdiEngDeletePalette(
_In_ HPALETTE hPal)
{
UNIMPLEMENTED;
return FALSE;
}
__kernel_entry
NTSTATUS
APIENTRY

56
win32ss/gdi/ntgdi/palette.c
View file

@ -12,6 +12,9 @@
#define NDEBUG
#include <debug.h>
#define PAL_SETOWNER 0x8000
#define MAX_PALCOLORS 65536
static UINT SystemPaletteUse = SYSPAL_NOSTATIC; /* The program need save the pallete and restore it */
PALETTE gpalRGB, gpalBGR, gpalRGB555, gpalRGB565, *gppalMono, *gppalDefault;
@ -1263,5 +1266,58 @@ NtGdiUnrealizeObject(HGDIOBJ hgdiobj)
return Ret;
}
__kernel_entry
HPALETTE
APIENTRY
NtGdiEngCreatePalette(
_In_ ULONG iMode,
_In_ ULONG cColors,
_In_ ULONG *pulColors,
_In_ FLONG flRed,
_In_ FLONG flGreen,
_In_ FLONG flBlue)
{
HPALETTE hPal = NULL;
ULONG *pulcSafe, ulColors[WINDDI_MAXSETPALETTECOLORS];
if ( cColors > MAX_PALCOLORS ) return NULL;
if ( cColors <= WINDDI_MAXSETPALETTECOLORS )
{
pulcSafe = ulColors;
}
else
{
pulcSafe = ExAllocatePoolWithTag(PagedPool, cColors * sizeof(ULONG), GDITAG_UMPD );
}
_SEH2_TRY
{
ProbeForRead( pulColors, cColors * sizeof(ULONG), 1);
RtlCopyMemory( pulcSafe, pulColors, cColors * sizeof(ULONG) );
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
if ( cColors > WINDDI_MAXSETPALETTECOLORS ) ExFreePoolWithTag( pulcSafe, GDITAG_UMPD );
_SEH2_YIELD(return hPal);
}
_SEH2_END;
hPal = EngCreatePalette( iMode/*|PAL_SETOWNER*/, cColors, pulColors, flRed, flGreen, flBlue );
if ( cColors > WINDDI_MAXSETPALETTECOLORS ) ExFreePoolWithTag( pulcSafe, GDITAG_UMPD );
return hPal;
}
__kernel_entry
BOOL
APIENTRY
NtGdiEngDeletePalette(
_In_ HPALETTE hPal)
{
return EngDeletePalette(hPal);
}
/* EOF */