iOS Quartz 2D can not draw Chinese Character ?

M

mars.tsang

macrumors newbie

Original poster

• Sep 20, 2009

• #1

When i tried to use Quartz 2d's CGContextShowGlyphsAtPoint or CGContextShowTextAtPoint to draw some chinese characters , i found the characters cann' t display ,but it's ok when there's only english characters .

Does Quartz not support this ? Or i have missed something ?

Hope someone can help.

Thanks .

 

F

firewood

macrumors G3

• Sep 20, 2009

• #2

Is there some reason you want to draw in Quartz instead of Cocoa Touch? If not, try using the NSString drawing methods instead.

 

M

mars.tsang

macrumors newbie

Original poster

• Sep 20, 2009

• #3

firewood said:

Is there some reason you want to draw in Quartz instead of Cocoa Touch? If not, try using the NSString drawing methods instead.

Click to expand...

Thanks firewood!

I use quartz mainly for a better performance cause i need to draw mass text , on the other side , i need to draw underline for some special string.

 

PhoneyDeveloper

macrumors 68040

• Sep 20, 2009

• #4

I believe that quartz does not draw unicode text, only ascii or macroman. As suggested, use the UIStringDrawing.h methods. I don't think you should find any performance issues. However, you can't use UIKit from a background thread.