static HPALETTE GetSystemPalette(HDC hdc)
{
static HPALETTE hPal = 0; // handle to a palette
HANDLE hLogPal; // handle to a logical palette
LOGPALETTE *pLogPal; // pointer to a logical palette
int nColors; // number of colors
// Find out how many palette entries we want.
nColors = PalEntriesOnDevice(hdc);
// Allocate room for the palette and lock it.
hLogPal = GlobalAlloc(GHND, sizeof(LOGPALETTE) + nColors * sizeof(PALETTEENTRY));
// if we didn't get a logical palette, return NULL
if (!hLogPal) return NULL;
// get a pointer to the logical palette
pLogPal = (LPLOGPALETTE)GlobalLock(hLogPal);
// set some important fields
pLogPal->palVersion = PALVERSION;
pLogPal->palNumEntries = nColors;
//Copy the current system palette into our logical palette */
GetSystemPaletteEntries(hdc, 0, nColors, (LPPALETTEENTRY)(pLogPal->palPalEntry));
// Go ahead and create the palette. Once it's created,
hPal = CreatePalette(pLogPal);
// clean up
GlobalUnlock(hLogPal);
GlobalFree(hLogPal);
return hPal;
}
HPALETTE GetSystemPalette(void)
{
HDC hDC; // handle to a DC
static HPALETTE hPal = NULL; // handle to a palette
HANDLE hLogPal; // handle to a logical palette
LPLOGPALETTE lpLogPal; // pointer to a logical palette
int nColors; // number of colors
// Find out how many palette entries we want.
hDC = GetDC(NULL);
if (!hDC)
return NULL;
nColors = PalEntriesOnDevice(hDC); // Number of palette entries
// Allocate room for the palette and lock it.
hLogPal = GlobalAlloc(GHND, sizeof(LOGPALETTE) + nColors *
sizeof(PALETTEENTRY));
// if we didn't get a logical palette, return NULL
if (!hLogPal)
return NULL;
// get a pointer to the logical palette
lpLogPal = (LPLOGPALETTE)GlobalLock(hLogPal);
// set some important fields
lpLogPal->palVersion = PALVERSION;
lpLogPal->palNumEntries = nColors;
// Copy the current system palette into our logical palette
GetSystemPaletteEntries(hDC, 0, nColors,
(LPPALETTEENTRY)(lpLogPal->palPalEntry));
// Go ahead and create the palette. Once it's created,
// we no longer need the LOGPALETTE, so free it.
hPal = CreatePalette(lpLogPal);
// clean up
GlobalUnlock(hLogPal);
GlobalFree(hLogPal);
ReleaseDC(NULL, hDC);
return hPal;
}
HPALETTE GetSystemPalette(void)
{
HDC hDC; // handle to a DC
HPALETTE hPal = NULL; // handle to a palette
HANDLE hLogPal; // handle to a logical palette
LPLOGPALETTE lpLogPal; // pointer to a logical palette
int i, nColors; // loop index, number of colors
/* Find out how many palette entries we want. */
hDC = GetDC(NULL);
if (!hDC)
return NULL;
nColors = PalEntriesOnDevice(hDC);
ReleaseDC(NULL, hDC);
/* Allocate room for the palette and lock it. */
hLogPal = GlobalAlloc(GHND, sizeof(LOGPALETTE) + nColors * sizeof(
PALETTEENTRY));
/* if we didn't get a logical palette, return NULL */
if (!hLogPal)
return NULL;
/* get a pointer to the logical palette */
lpLogPal = (LPLOGPALETTE)GlobalLock(hLogPal);
/* set some important fields */
lpLogPal->palVersion = PALVERSION;
lpLogPal->palNumEntries = nColors;
for (i = 0; i < nColors; i++)
{
lpLogPal->palPalEntry[i].peBlue = 0;
*((LPWORD)(&lpLogPal->palPalEntry[i].peRed)) = i;
lpLogPal->palPalEntry[i].peFlags = PC_EXPLICIT;
}
/* Go ahead and create the palette. Once it's created,
* we no longer need the LOGPALETTE, so free it.
*/
hPal = CreatePalette(lpLogPal);
/* clean up */
GlobalUnlock(hLogPal);
GlobalFree(hLogPal);
return hPal;
}
