請問一下我有一張640*480的灰階圖片，我要如何做才能把某一個灰階值的pixel全部加起來SHOW在Edit1呢？ 例如只要統計黑色(gv=0)

計算黑點ｐｉｘｅｌ：
Graphics::TBitmap *TheBitmap, *TempBitmap;
TempBitmap = new Graphics::TBitmap();
TempBitmap =Image1->Picture->Bitmap;
Byte *ptr_s;
int g_s,j,i,line,g_s1,g_s2;
int cxy=0,sx=0,sy=0,sum=0;
AnsiString ss;
TempBitmap->PixelFormat = pf24bit;
for (j=0; jHeight; j )
{
ptr_s = (Byte *)Image1->Picture->Bitmap->ScanLine[j];
for (i=0; iWidth; i )
{
g_s = ptr_s[i*3 2];
g_s1= ptr_s[i*3 1];
g_s2= ptr_s[i*3];
if(g_s2==0&& g_s1==0&& g_s==0)
{
sx=sx i;
sy=sy j;
sum=sum 1;
cxy ;
i Image1->Picture->Bitmap->Width; //紀錄座標之後讓i大於判斷式跳出迴圈
j Image1->Picture->Bitmap->Height;//紀錄座標之後讓j大於判斷式跳出迴圈
}

}
}

Form1->Edit1->Text=sum;

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