Getpixel return value problem

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Hello..
I have a problem..i want to store a color variable to an array..
Let see my code

C++

Bitmap* bmp = bmp->FromFile(L"coba.bmp", false);
Color color;

and

C++

int i,j;
int width;
int height;
int matriks_gbr[10][10];
width = bmp->GetWidth();
height = bmp->GetHeight();
for (i=0;i<=height-1;i++)
{
	for (j=0;j<=width-1;j++)
	{
		matriks_gbr[i][j] = bmp->GetPixel(i,j,&color);
	}
}

and just wanna to check the content of matriks_gbr :

C++

if (matriks_gbr[0][0] = RGB(255,255,255))
  AfxMessageBox(_T("works"), MB_OK);
else
  AfxMessageBox(_T("not works"), MB_OK);

It worked out (message works) , but when i changed to RGB(255,255,255) to nonzeero number like 255 or 20 , it also appeared "works".
Later i know the problem, getpixel only return Ok and non-ok.
But i want to access the color and store it to an array..
Can you tell me how to store it to array?

Posted 7-Sep-11 19:31pm

Kay Andrian Fikar

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Simon Bang Terkildsen 8-Sep-11 1:54am

you have an assignment in your if-statement which I don't beleive you intended, as it'll be false when you assign 0(black) to your array. you should use if (matriks_gbr[0][0] == RGB(255,255,255))

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Arun Parthasarathy · Answer 1 · 2011-09-07T19:48:00

GetPixel() you referrig here means API or you have your own.
If its an API, it returns COLORREF.
COLORREF GetPixel(
__in HDC hdc,
__in int nXPos,
__in int nYPos
);

Rather than having the array,
Better have a vector of structures.
In each structure maintain variables for r,g, and b .