[Qt-interest] How to render text on Image with different color???

[trinathpujari]

Robert Hairgrove wrote:
> trinathpujari wrote:
>   
>> Hi All,
>>
>>          I have text drawn on QImage. Now i want to change back ground 
>> color as black and text as some other color(selected).I am checking each 
>> pixel color and updating the pixel color. But text is becoming distorted.
>>     Alternative to this i did invert pixel at that time text is coming 
>> properly but Back ground is different(Not black which i wanted).
>>          Please help me to resolve this.
>>     
>
> Wouldn't it be easier (and possibly faster) to just erase the entire 
> background and redraw the text?
>
> The default behaviour for drawing text with QPainter is with 
> antialiasing on. Antialiasing blends the edges of the text with the 
> background color to provide a smoother perception (i.e. less jagged 
> edges). If you need to change the image pixel by pixel, you will 
> probably want to turn this off by setting the appropriate property of 
> the QFont object before drawing the text (see documentation for the 
> QPainter class for details).
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> Hi Robert,
             Actually I am creating that QImage at starting and drawing 
text on it. After that i am selecting some portion only for that 
reverting background color to black and foreground color with some other 
color. I checked with setting Anti Aliasing text to false still no affect.

       Help to resolve this.
   
    Thanks and Regards,
      Trinath