C++代码运行时间长了以后就会崩溃，是GDI函数释放问题吗？
本帖最后由 VisualEleven 于 2013-09-05 11:16:52 编辑

void CALLBACK CRealPlayer::registerDrawFun( long nPort,HDC hDc,LONG nUser )
{    
     CRealPlayer* realPlayer = reinterpret_cast<CRealPlayer*>( nUser );   
     if ( !realPlayer)   
     {        
         std::cout << "realPlayer is NULL!!" << std::endl;        
         return;    
     }     

     HWND wind;     
     realPlayer->getWinId( wind ); 
    
     if ( NULL == wind )     
     {          
          std::cout << "wind is NULL!!" << std::endl;          
          return;    
     }   

     RECT rec;   
     GetClientRect( wind,&rec );

      unsigned long TextColor = realPlayer->m_Osdinfo.m_fontColor; 
   
     SetTextColor( hDc, TextColor );    
     SetBkMode( hDc,TRANSPARENT );    

     uint32_t ret = rec.bottom/155;   

     int px = realPlayer->m_Osdinfo.m_xPos,py = realPlayer->m_Osdinfo.m_yPos;  
  
     px = px * rec.right / 190;    
     py = py * rec.bottom / 155;    

     LOGFONT logfont;     //改变输出字体    
      ZeroMemory( &logfont,sizeof( LOGFONT ) );    
     logfont.lfCharSet   =   GB2312_CHARSET;       
 
     logfont.lfHeight   = MulDiv(10*ret,GetDevice(hDc,LOGPIXELSY),72);    

     HFONT   hFont   =   CreateFontIndirect(&logfont);   
     if ( NULL == hFont )   
     {         
          DWORD err = GetLastError();        
          std::cout << err << "    hFont is NULL!!" << std::endl;     
          return;   
     }   

     SelectObject(hDc, hFont);  
 
     size_t size = realPlayer->m_Osdinfo.m_osdText.length();  
     wchar_t *buffer = new wchar_t[ size/2 + 1];   
     MultiByteToWideChar( CP_ACP, 0, hikPlayer->m_Osdinfo.m_osdText.c_str(), size,   buffer, size );   
     buffer[size/2] = 0;       
     TextOut(hDc,px,py,buffer,size/2 ); 
  
     DeleteObject( hFont );    
     DeleteDC(hDc);
}

gdi c++ 字体
[解决办法]
new delete

其它的看不出来。。

你看看任务管理器--句柄数是多少
[解决办法]
你的DeleteObject( hFont ); 操作应该会失败，
你需要在它之前调用SelectObject(hOldFont);加载旧的HFONT
[解决办法]
HFONT* oldFont = &hFont;

SelectObject(hDc, hFont);

--》
HFONT oldFont = （HFONT）SelectObject(hDc, hFont);