Hi, ALL,
In the GtkComboBox documentation I see this:
[quote]
The "popdown" signal
gboolean user_function (GtkComboBox *button,
gpointer user_data) : Run Last / ActionThe ::popdown signal is a keybinding signal which gets emitted to popdown the combo box list.
The default bindings for this signal are Alt+Up and Escape.
button :
the object which received the signal
user_data :
user data set when the signal handler was connected.
Since 2.12
--------------------------------------------------------------------------------
The "popup" signal
void user_function (GtkComboBox *widget,
gpointer user_data) : Run Last / ActionThe ::popup signal is a keybinding signal which gets emitted to popup the combo box list.
The default binding for this signal is Alt+Down.
widget :
the object that received the signal
user_data :
user data set when the signal handler was connected.
Since 2.12
[/quote]
I want to se those notification events to dynamically change the content
of the combo box.
So, for the "popdown" handler, I am writing (pseudo-code):
combo->Clear();
combo->Append( "Text1" );
combo->Append( "Text2" );
combo->Append( "Text3" );
On the "popup" event, I have (pseudo-code):
combo->Clear();
combo->Append( "Select String" );
I have 2 problems.
1. If the original combobox has the string and the string is selected, then
the dropdown button is covered by dropdown list.
2. If I select the string, the list disapper and the "popup" event is fired,
however, I see the GTK exception that is raised.
I'm using GTK+ 2.14.7 on Gentoo Linux, and working with the wxWidget6s/wxGTK
library.
On of the core wxGTK developers suggested that current GTK+ implementation
is doing something and does not expect the content of the combobox to be changed
on those 2 events.
So, here are my questions:
1. Is there a plan to make those 2 events work the same as in Windows WM_CBDROPDOWN
and WM_CBPOPUP?
2. What GTK+ does during the processing of those 2 events that prevents programmer to change
the content of the combo box?
Thank you.
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