somebody tell me why bmpfont don't align center ?

it is strange in cocosbuilder 3.0 and cocos2dx v2

I try to modify the CCLabelBMPFont Class :
lineWidth = lastChar~~>getPosition.x + lastChar~~>getContentSize().width/2.0f;
to:
lineWidth = lastChar~~>getPosition.x + lastChar~~>getContentSize().width/4.0f;

it works well……

why? it has a empty space?


屏幕快照 2013-08-10 下午7.19.30.png (8.8 KB)