oracle@dayton.saic.com (09/21/90)
I have a question about modifying the system palette using the
Microsoft Windows SDK (Ver 3.0 )! How is it done!?
I need to reset the palette to 16 solid shades of gray for an
imagery display application. The following summarizes the steps I
used unsuccessfully!
NPLOGPALETTE pLogPal;
.
.
.
hDC = GetDC( hWnd );
pLogPal = (NPLOGPALETTE) LocalAlloc (LMEM_FIXED,
(sizeof (LOGPALETTE) +
(sizeof (PALETTEENTRY) * (PALETTESIZE))));
pLogPal->palVersion = 0x300;
pLogPal->palNumEntries = PALETTESIZE; /* 16 */
pLogPal->palPalEntry[0].peRed = (BYTE)0;
pLogPal->palPalEntry[0].peGreen = (BYTE)0;
pLogPal->palPalEntry[0].peBlue = (BYTE)0;
pLogPal->palPalEntry[0].pePlags = (BYTE)0;
.
. /* Entries 1 thru 15 set */
. /* 17, 34, 51, 68, 85, 102, 119, */
. /* 136, 153, 170, 204, 221, 238, 255 */
.
hPal = CreatePalette( (LPLOGPALETTE) pLogPal);
SetSystemPaletteUse( hDC, SYSPAL_NOSTATIC );
SelectPalette( hDC, hPal, 1);
RealizePalette( hDC );
SendMessage( 0xFFFF, WM_SYSCOLORCHANGE, NULL, NULL );
.
.
.
When I attempt to post pixels to the screen, I use the following
call.
SetPixel( hDC, x, y, RGB( 17, 17, 17 ) ); /* Explicit RGB Call */
I am really frustrated, and would appreciate any help! Please mail
responses to the address posted below.
THANX in ADVANCE!
Tim G.
_____________________________________________________________________________
____ ____ ___ Tim Granger
/___ /___/ / / Science Applications International Corporation
____// / / /___ Dayton, Ohio
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