Pango layout wrap problem

[johnny kao <kaojohnny gmail com>]

Hi all,

Recently I am writing a little layout engine for a project, but I encounter a problem about Pango's wrap behavior.

I found Pango will wrap the string such as:

pango_layout_set_text (layout, "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++", -1);

pango_layout_set_width (layout, 240 * PANGO_SCALE);
pango_layout_set_wrap (layout, PANGO_WRAP_WORD);

but it will not wrap the string such as:

pango_layout_set_text (layout, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", -1);

pango_layout_set_width (layout, 240 * PANGO_SCALE);
pango_layout_set_wrap (layout, PANGO_WRAP_WORD);

I expect both of them not wrapped. Do I miss any setting to the layout?

I know if I don't call pango_layout_set_width(...) the layout will not be wrapped, but I do need Pango help me wrap a real sentence. 

I am a very newbie for pango, any advice is very welcome.

Thanks,

Johnny