| |
|
| Classification: |
C++ |
Category: |
Fonts & Bitmaps |
| Created: |
03/29/2004 |
Modified: |
04/19/2004 |
| Number: |
FAQ-1020 |
| Platform: |
Symbian OS v6.1, Symbian OS v7.0, Symbian OS v7.0s, Symbian OS v8.0 |
|
Question:
If a character I select is not present in the current font then the editor should display an "undefined" glyph - but nothing
seems to be displayed (and there is no warning)
Answer:
The font being used is a bitmap font, and/or the "replacement character" is not defined in the glyph index.
Bitmap fonts do not (by default) have the concept of a glyph to use for unsupported characters.
In Symbian OS v7.0s, Symbian added the concept of a "replacement character" to use in place of any undefined glyph's. This
character is whatever character is at position F6DB in the bitmap font's glyph index.
In Symbian OS v6.1, if a bitmap font does not have a requested character, then nothing is displayed on the screen (note that
the character is still written to the underlying document).
TrueType fonts do have the concept of an "undefined character" glyph which will be used (This is font specific, but it is
usually an empty box). Therefore a glyph will be displayed for all versions of Symbian OS.
|
| |
|
![[Index]](../../a_stock/btn_index_wt.gif){kind=small}
![[spacer]](../../a_stock/btn_spacer.gif){kind=small}
![[Previous]](../../a_stock/btn_prev_wt.gif){kind=small}
![[Next]](../../a_stock/btn_next_wt.gif){kind=small}
![[Previous]](../../a_stock/btn_prev.gif){kind=small}
![[Top]](../../a_stock/btn_top.gif)
![[Next]](../../a_stock/btn_next.gif){kind=small}