Thanks alot for your fast reply,
I wrote a simple MySQL-Class wich is derived from the libsql++ class.
In this class I used std::string to get the columns of a row.
The columns (strings) are stored in a vector<string> wich I return to
Glib::ustring in My treeview-data-window.
Hiere are some snippets:
:::::::::::::::::::::::: SNIP ::::::::::::::::::::::
database.cpp
(My simple MySQL database class.)
DataBase::Database()
{
// db-connect
// query-setup
// other connect related stuff
mysqlpp::StoreQueryResult result; // Setup the result object
int rows; // Keep track of result counts
}
void DataBase::returnrow(int dataid)
{
// Setup db-query with dataid to get requested db-row
//
mysqlpp::Query query = dbcon.query(queries.alldata); // DB Query
result = query.store(); // Store the results
rows = result.num_rows(); // Set the number of results
}
std::vector<std::string> DataBase::fetchdata(int row)
{
std::vector<std::string> tmp; // Temp vector for return
for (int i = 0; i < result.field_names()->size(); ++i)
{
// Every column will be stored in the temp vector
tmp.push_back((std::string)result[row][i]);
}
return tmp; // Return the temp-vector with the [columns]=data
}
------------
datawindow.cpp
(The window in where the data is displayed after dbl-click on treeview)
DataWindow::DataWindow()
{
// Widgets setup
// Database connect via DataBase-Object
}
void DataWindow::getid(int dataid)
{
// From the treeview I call this method to set the
// requested row-id
mysql.returnrow(dataid);
// Call this method to setup the entries and textview
setdata();
}
void DataWindow::setdata()
{
l_dataid.set_text(mysql.fetchdata(0)[0]);
Gtk::TreeModel::Row selrow = *(ls_cbox->prepend());
selrow[c_mod.c_cat] = mysql.fetchdata(0)[1];
cbox.set_active(0);
// Here comes the problem, I get every column from My
// database-object wich I store in the entries.
e_name.set_text(mysql.fetchdata(0)[2]);
e_number.set_text(mysql.fetchdata(0)[3]);
e_user.set_text(mysql.fetchdata(0)[4]);
e_pass.set_text(mysql.fetchdata(0)[5]);
e_mail.set_text(mysql.fetchdata(0)[6]);
e_url.set_text(mysql.fetchdata(0)[7]);
e_other.set_text(mysql.fetchdata(0)[8]);
// Here we have the main problem: the textview-buffer
// Some rows are shown here, some not.
b_descr->set_text(mysql.fetchdata(0)[9]);
}
::::::::::::::::::::::::: SNIP END ::::::::::::::::::::::::::::
That is the main code where the problem occours.
The DataWindow is called on doubleclick on a treeview-row.
With the call of the DataWindow I call the DataView::getid()
wich receive the database row-id.
Then I fill with the DataView::setdata() method the widgets
in the new window.
Some chars are, as I told, glyphs, but the textbuffer is the main
problem.
As far as I know, the entries and textbuffers are expecting
Glib::ustring, but I thought the conversion from std::string to
Glib::ustring is quite compatible between these types.
I used std::string in the database class, because I wanted to isolated
it from Gtkmm for other not Gtkmm-related projects.
Thank you for helping.
Bernd
Am Sonntag, den 28.12.2008, 22:26 +0100 schrieb Milosz Derezynski:
> Are you using Glib::ustring anywhere in the process of getting the
> data from the SQL database to the view?
>
> Glib::ustring implicitly (and in my opinion still at least not well
> enough documented/hinted at) converts from UTF-8
> to the current locale with operators << and >>. If you are using a
> stringstream anywhere in the process, or are
> using operator<< or operator>> in any other way, this could then be
> the cause of the problem.
>
> Otherwise, and in the above described case too actually it would help
> very much if you could post (if possible, all of)
> the relevant code online.
>
> Regards,
> M.
>
> On Sun, Dec 28, 2008 at 8:53 PM, Bernd Robertz
> <[email protected]> wrote:
> Hello list,
>
> I'm not really sure, but I hope My question is in the right
> place here.
>
> I wrote a simple database app like this:
>
> Connect to a MySQL server via libmysql++,
> and then list the rows in a treeview.
> Doubleclick on a row shows a window with some entries and a
> textview
> with the content of the selected row.
> The textview is associated with a type text in the DB.
>
> Everything is fine.
>
> So but I ran really into problems with the charsets.
> german umlaute (ö, ä, etc.) and some other characters are
> glyphs in the
> treeview. Ok, thats not the main problem.
>
> That is: The entries in the detailed view still shows the
> glyphs for
> some chars like ö, ä.
> But on some rows, the represented textbuffer for textview is
> not
> visible. Wich means the textview is in some rows empty.
>
> I run My app from a console and I got these error messages:
>
> :::::::::
> Gtk-CRITICAL **: gtk_text_buffer_emit_insert: assertion
> `g_utf8_validate
> (text, len, NULL)' failed
> :::::::::
>
> In other rows, the textbuffer is correct shown, exepct some
> glyphs.
>
> If I print the textbuffer as a simple .c_str() in a console it
> will be
> shown correctly (inklusive ä, ö, ü...).
> (Tried to show the textview as a .c_str(), without any
> effect.)
>
> The SQL connection is serverside-configured as UTF-8 Unicode.
> The SQL table collation is UTF-8 General CI (Case
> Insensitive).
> The Application runs on a de...@euro (ISO-8859-15).
>
> All characters are shown correctly in a PHP app wich does the
> same, just
> only online. :-)
>
> I hope someone could turn on a light above my head, why I
> don't get the
> right charactes.
>
> Thanks alot in advance
>
> Bernd
>
>
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>
>
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