the flame of alcohol bruner is black

I did a lighting alcohol bruer which used “glBlendFunc”,and it looked like glass,but the flame is black.(my English is poor)
any one help me?thank you!!
following is a few codes :

BOOL CMyFire2View::RenderScene()
CJiuJingDeng JJD;
CJiQiPing JQP;

A bit too few code at my point of view… And a bit too fiew information too…

Yeah, we have no idea what CJiuJingDeng and CJiQiPing is, (other than it might be Chineese), and your code is kinda chopped.


glBlendFunc(GL_ONE, GL_ONE);