-|
+ |
-wxWindows 2 for GTK FAQ
+wxWidgets 2 for GTK FAQ
|
@@ -20,25 +21,103 @@ wxWindows 2 for GTK FAQ
-See also top-level FAQ page.
+See also top-level FAQ page
+and Unix FAQ page.
+
+List of questions in this category
+
+
+
-What is wxWindows 2 for GTK?
+
-wxWindows 2 for GTK is a port of wxWindows to the GTK+ toolkit,
-which is freely available for most flavours of Unix with X. wxWindows 2 for GTK is
+wxWidgets 2 for GTK is a port of wxWidgets to the GTK+ toolkit,
+which is freely available for most flavours of Unix with X. wxWidgets 2 for GTK is
often abbreviated to wxGTK. wxGTK has a separate home page here.
-
Does wxGTK have GNOME support?
+
+
+If your program reads the floating point numbers in the format 123.45
+from a file, it may suddently start returning just 123 instead of the
+correct value on some systems -- which is all the more mysterious as the same
+code in a standalone program works just fine.
+
+
+The explanation is that GTK+ changes the current locale on program startup. If
+the decimal point character in the current locale is not the period (for
+example, it is comma in the French locale), all the standard C functions won't
+recognize the numbers such as above as floating point ones any more.
+
+
+The solution is to either use your own function for reading the floating point
+numbers (probably the best one) or to call setlocale(LC_NUMERIC, "C")
+before reading from file and restore the old locale back afterwards if needed.
+
+
Currently wxGTK does not have any features that would involve dependence on any desktop
-environment's libraries, so it can work on GNOME, KDE and with other window managers
+environment's libraries, so it can work on GNOME, KDE and with other window managers
without installation hassles. Some GNOME and KDE integration features are file based, and
so may be added without dependence on libraries. Other features may be supported in the
future, probably as a separate library.
+
+
+It seems that some versions of RedHat include a badly patched version of GTK+ (not wxGTK)
+which causes some trouble with wxWidgets' socket code. Common symptoms are that when
+a client tries to establish a connection to an existing server which refuses the request,
+the client will get notified twice, first getting a LOST event and then a CONNECT event.
+This problem can be solved by updating GTK with an official distribution of the library.
+
+
+
+
+Robert Roebling replies:
+
+"The important thing is the libc version that your app
+is linked against. The most recent version is 2.2.5
+and programs linked against it will not run with version
+2.1.X so that you will fare best if you compile your app
+on a 2.1.X system. It will then run on practically all
+Linux distros (if you link you app statically against
+the image libraries and std C++ lib)."
+
+
+
+
+No, this is not possible. It leads to crashes in GTK+.
+
+
+
+
+In wxGTK, the frames never get focus and so can never receive CHAR
+nor KEY events so an EVT_CHAR handler for a frame will be
+never called. To receive these events, you should create a wxPanel
+inside the frame and register the key event handlers for the panel, not the
+frame.
+
+
+
+
+
+When a fatal X11 error occurs, the application quits with no stack trace.
+To find out where the problem is, put a breakpoint on g_log (b g_log
+in gdb).
+
+