請問為何我的bit plane跑出來沒東西..   THX



void TChild::bitplane(){

Graphics::TBitmap *AttendBitmap;
AttendBitmap=new Graphics::TBitmap();
AttendBitmap->PixelFormat=pf24bit;
AttendBitmap->Width=OriginalBitmap->Width;
AttendBitmap->Height=OriginalBitmap->Height;

r1 = new int*[AttendBitmap->Width];
g1 = new int*[AttendBitmap->Width];
b1 = new int*[AttendBitmap->Width];
y1 = new int*[AttendBitmap->Width];
for(i=0; iWidth; i ) {
r1[i] = new int[AttendBitmap->Height];
g1[i] = new int[AttendBitmap->Height];
b1[i] = new int[AttendBitmap->Height];
y1[i] = new int[AttendBitmap->Height];
}
for(j=0; jHeight; j )
for(i=0; iWidth; i ){
switch(Form2->ScrollBar1->Position)
{
case 0:
r[i][j] = r[i][j]%2*255;
g[i][j] = g[i][j]%2*255;
b[i][j] = b[i][j]%2*255;
break;
case 1:
r[i][j] = ((r[i][j]/2)%2);
g[i][j] = ((g[i][j]/2)%2);
b[i][j] = ((b[i][j]/2)%2);
break;
case 2:
r[i][j] = ((r[i][j]/4)%2);
g[i][j] = ((g[i][j]/4)%2);
b[i][j] = ((b[i][j]/4)%2);
break;
case 3:

r[i][j] = ((r[i][j]/8)%2);
g[i][j] = ((g[i][j]/8)%2);
b[i][j] = ((b[i][j]/8)%2);
break;
case 4:
r[i][j] = ((r[i][j]/16)%2);
g[i][j] = ((g[i][j]/16)%2);
b[i][j] = ((b[i][j]/16)%2);
break;
case 5:
r[i][j] = ((r[i][j]/32)%2);
g[i][j] = ((g[i][j]/32)%2);
b[i][j] = ((b[i][j]/32)%2);
break;
case 6:
r[i][j] = ((r[i][j]/64)%2);
g[i][j] = ((g[i][j]/64)%2);
b[i][j] = ((b[i][j]/64)%2);
break;
case 7:
r[i][j] = ((r[i][j]/128)%2);
g[i][j] = ((g[i][j]/128)%2);
b[i][j] = ((b[i][j]/128)%2);
break;
}
}



Image1->Picture->Assign(AttendBitmap);
OriginalBitmap->Assign(AttendBitmap);
delete AttendBitmap;


delete r1;
delete g1;
delete b1;

}

我問一個非常蠢的問題....

AttendBitmap 你有載入圖檔嗎?

------
恩...

友阿   只是不之問題在哪

Graphics::TBitmap *AttendBitmap;
AttendBitmap=new Graphics::TBitmap();

不是才剛new出來而已......

根本沒給值阿

rgb當然也不會有值阿.....

我想你是想用手調的給顏色

但是最起碼你也要把AttendBitmap歸零一下

不然剛new出來的記憶體你就直接用 這樣會出錯的

而你所謂的沒有東西跑出來是指全部都黑色的嗎??

因為我看你的程式全部都是求/2的餘數呢

而且二維陣列也不是這樣刪除的....

delete r1;
delete g1;
delete b1;

------
恩...

編輯記錄

你的r1,g1,b1,y1都new完2維陣列
沒有給值阿?