c# - WPF: How to get character coordinates in TextBlock? -


i have textblock customizing in code without xaml. 1 thing need coordinates character contained in textblock (eg. rect character relative textblock top left corner). how can go doing task? guess need implement custom method such 

rect textblock.getrectforcharacter(int charindex);

is there way can accomplish this? note textblock can multi-lined.


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