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implement NtGdiGetSystemPaletteEntries (patch by w3seek)

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svn path=/trunk/; revision=26441
This commit is contained in:
Christoph von Wittich 2007-04-20 22:36:57 +00:00
parent 789cd80e65
commit cf933b1f2b
1 changed files with 66 additions and 24 deletions
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90
reactos/subsystems/win32/win32k/objects/color.c
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@ -309,35 +309,77 @@ UINT STDCALL NtGdiGetSystemPaletteEntries(HDC hDC,
UINT Entries,
LPPALETTEENTRY pe)
{
//UINT i;
//PDC dc;
/*
if (!(dc = AccessUserObject(hdc))) return 0;
PPALGDI palGDI = NULL;
PDC dc = NULL;
UINT EntriesSize = 0;
UINT Ret = 0;
if (!pe)
{
Entries = dc->GDIInfo->ulNumPalReg;
goto done;
}
if (Entries == 0)
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
return 0;
}
if (StartIndex >= dc->GDIInfo->ulNumPalReg)
{
Entries = 0;
goto done;
}
_SEH_TRY
{
if (pe != NULL)
{
EntriesSize = Entries * sizeof(pe[0]);
if (Entries != EntriesSize / sizeof(pe[0]))
{
/* Integer overflow! */
SetLastWin32Error(ERROR_INVALID_PARAMETER);
_SEH_LEAVE;
}
if (StartIndex + Entries >= dc->GDIInfo->ulNumPalReg) Entries = dc->GDIInfo->ulNumPalReg - StartIndex;
ProbeForWrite(pe,
EntriesSize,
sizeof(UINT));
}
for (i = 0; i < Entries; i++)
{
*(COLORREF*)(entries + i) = COLOR_GetSystemPaletteEntry(StartIndex + i);
}
if (!(dc = DC_LockDc(hDC)))
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
_SEH_LEAVE;
}
done:
// GDI_ReleaseObj(hdc);
return count; */
// FIXME UNIMPLEMENTED;
return 0;
palGDI = PALETTE_LockPalette(dc->w.hPalette);
if (palGDI != NULL)
{
if (pe != NULL)
{
UINT CopyEntries;
if (StartIndex + Entries < palGDI->NumColors)
CopyEntries = StartIndex + Entries;
else
CopyEntries = palGDI->NumColors - StartIndex;
memcpy(pe,
palGDI->IndexedColors + StartIndex,
CopyEntries * sizeof(pe[0]));
Ret = CopyEntries;
}
else
{
Ret = dc->GDIInfo->ulNumPalReg;
}
}
}
_SEH_HANDLE
{
SetLastNtError(_SEH_GetExceptionCode());
}
_SEH_END;
if (palGDI != NULL)
PALETTE_UnlockPalette(palGDI);
if (dc != NULL)
DC_UnlockDc(dc);
return Ret;
}
UINT STDCALL NtGdiGetSystemPaletteUse(HDC hDC)