how change the Pointer size inside the function?

[Cambalinho]

see these function that have an argument Pointer:

void GetDIBs(BYTE *Pixels)
    {
        int dwLen = bmi.bmiHeader.biWidth *bmi.bmiHeader.biHeight * (BitMap.bmBitsPixel / 8);
        Pixels = (BYTE *)realloc(Pixels, dwLen);
        memset(Pixels, 0, dwLen);
        GetBitmapBits(hBitmap,dwLen,Pixels);
.............

the line:
Pixels = (BYTE *)realloc(Pixels, dwLen);
seems ignored.. why? i can't change the pointer size?

[Peter87]

What makes you think it is ignored?

Does Pixels point to the beginning of a memory block that was previously created with malloc/calloc/realloc?

[Peter87]

Note that Pixels is a copy of the pointer that was passed as argument to the GetDIBs function and modifying Pixels inside the function will not automatically update any pointer outside the function.

[Cambalinho]

is there a way for do it?

[JLBorges]

void GetDIBs( BYTE*& Pixels )

[Cambalinho]

thank you so much. works fine.
and i tested that must be: "pointer adressed"(*&) and not "adressed pointer"(&*).
thank you so much for all to all