Apparently the onclick event gets called with an itemindex of -1 every
other time, even when you click on the item. I was then trying to
access an object in the TListBox by the provided onclick itemindex.
For every click, I get to onclick event calls. The first one has
itemindex of -1 and the second one has it set properly.
Sorry for top posting - using web interface.
On 5/7/2006, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
>I'm using a custom drawn TListBox. Every _other_ time I go to tab on my
>form it's crashing with this error. It's not happening during my
>painting of the TListBox though - it happens afterwards apparently. All
>lines references are part of Lazarus and not my code, but I won't
>immediately rule out a bug on my part.
>
>Any ideas of what to look for?
>
>Here's a backtrace:
>
>
>ERROR in gtk-interface: TGtkListStringList.Get Out of bounds.
>Creating gdb catchable error:
>
>Program received signal SIGFPE, Arithmetic exception.
>0x0811e0e0 in RAISEEXCEPTION (MSG=0x8268528) at gtkproc.inc:540
>540 gtkproc.inc: No such file or directory.
> in gtkproc.inc
>Current language: auto; currently pascal
>(gdb) bt full
>#0 0x0811e0e0 in RAISEEXCEPTION (MSG=0x8268528) at gtkproc.inc:540
>No locals.
>#1 0x080cdad0 in TGTKLISTSTRINGLIST__GETLISTITEM (INDEX=-1,
>this=0xb7b46f14)
> at gtklistsl.inc:697
> result = (PGTKLISTITEM) 0x0
> GETLISTITEM = (PGTKLISTITEM) 0x0
> RESULT = (PGTKLISTITEM) 0x0
>#2 0x080cd99a in TGTKLISTSTRINGLIST__GETOBJECT (INDEX=-1,
>this=0xb7b46f14)
> at gtklistsl.inc:659
> result = (^TOBJECT) 0x0
> LISTITEM = (PGTKLISTITEM) 0x816016d
> GETOBJECT = (^TOBJECT) 0x0
> RESULT = (^TOBJECT) 0x0
>#3 0x0807a0b6 in TFRMMAIN__CATLISTCLICK (SENDER=0xb7b99248,
>this=0xb7b816a8)
> at unitmain.pas:940
> I = 138468192
> TEMPCAT = (^TCHKCATEGORY) 0x0
> CATNAME = (ANSISTRING) 0x0
> SUBCATNAME = (ANSISTRING) 0x0
> TEMPSTR = (ANSISTRING) 0x0
>#4 0x08110916 in TCONTROL__CLICK (this=0xb7b99248) at control.inc:1857
>No locals.
>#5 0x0815fde0 in TCUSTOMLISTBOX__DOSELECTIONCHANGE (USER=true,
> this=0xb7b99248) at customlistbox.inc:401
>No locals.
>#6 0x0815f916 in TCUSTOMLISTBOX__LMSELCHANGE (THEMESSAGE=void,
> this=0xb7b99248) at customlistbox.inc:239
>No locals.
>#7 0x0805ce47 in SYSTEM_TOBJECT_$__DISPATCH$formal ()
>No symbol table info available.
>#8 0x0811021e in TCONTROL__WNDPROC (THEMESSAGE=
> {MSG = 564, WPARAM = 0, LPARAM = 0, RESULT = 0, WPARAMLO = 0,
>WPARAMHI = 0, LPARAMLO = 0, LPARAMHI = 0, RESULTLO = 0, RESULTHI = 0},
>this=0xb7b99248)
> at control.inc:1534
> FORM = (^TCUSTOMFORM) 0x832cc60
>#9 0x08107bf9 in TWINCONTROL__WNDPROC (MESSAGE=
> {MSG = 564, WPARAM = 0, LPARAM = 0, RESULT = 0, WPARAMLO = 0,
>WPARAMHI = 0, LPARAMLO = 0, LPARAMHI = 0, RESULTLO = 0, RESULTHI = 0},
>this=0xb7b99248)
> at wincontrol.inc:3365
> FORM = (^TCUSTOMFORM) 0xbfec9e01
>#10 0x081248e5 in DELIVERMESSAGE (TARGET=0xb7b99248, AMESSAGE=void)
> at gtkproc.inc:3469
> result = 38926
> DELIVERMESSAGE = 38926
> RESULT = 38926
>---Type <return> to continue, or q <return> to quit---
>#11 0x081302aa in GTKLISTBOXSELECTIONCHANGEDAFTER (WIDGET=0x83e90b8,
> DATA=0xb7b99248) at gtkcallback.inc:3131
> result = true
> MESS = {MSG = 564, WPARAM = 0, LPARAM = 0, RESULT = 0, WPARAMLO =
>0,
> WPARAMHI = 0, LPARAMLO = 0, LPARAMHI = 0, RESULTLO = 0, RESULTHI = 0}
> GTKLISTBOXSELECTIONCHANGEDAFTER = true
> RESULT = true
>#12 0xb7dc87b3 in gtk_marshal_NONE__NONE () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#13 0xb7dfc2f5 in gtk_signal_connect_while_alive ()
> from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#14 0xb7dfd251 in gtk_signal_emit_stop_by_name () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#15 0xb7dfda59 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#16 0xb7dc4457 in gtk_list_scroll_vertical () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#17 0xb7dc87b3 in gtk_marshal_NONE__NONE () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#18 0xb7dfc2f5 in gtk_signal_connect_while_alive ()
> from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#19 0xb7dfd3e3 in gtk_signal_emit_stop_by_name () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#20 0xb7dfda59 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#21 0xb7db5fdf in gtk_item_deselect () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#22 0xb7dc54cb in gtk_list_item_deselect () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#23 0xb7dc42fd in gtk_list_scroll_vertical () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#24 0xb7dc87b3 in gtk_marshal_NONE__NONE () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#25 0xb7dfc2f5 in gtk_signal_connect_while_alive ()
> from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#26 0xb7dfd3e3 in gtk_signal_emit_stop_by_name () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#27 0xb7dfda59 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#28 0xb7db5f8f in gtk_item_select () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#29 0xb7dc54a8 in gtk_list_item_select () from /usr/lib/libgtk-1.2.so.0
>---Type <return> to continue, or q <return> to quit---
>No symbol table info available.
>#30 0xb7dc2fa4 in gtk_list_undo_selection () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#31 0xb7dc8664 in gtk_marshal_NONE__POINTER () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#32 0xb7dfd336 in gtk_signal_emit_stop_by_name () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#33 0xb7dfda59 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#34 0xb7dbf590 in gtk_list_select_child () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#35 0xb7dc0af0 in gtk_list_set_selection_mode () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#36 0xb7dc8664 in gtk_marshal_NONE__POINTER () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#37 0xb7dfd336 in gtk_signal_emit_stop_by_name () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#38 0xb7dfda59 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#39 0xb7d7fb9c in gtk_container_set_focus_child ()
> from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#40 0xb7e38d3e in gtk_widget_intersect () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#41 0xb7dc87b3 in gtk_marshal_NONE__NONE () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#42 0xb7dfd419 in gtk_signal_emit_stop_by_name () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#43 0xb7dfda59 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#44 0xb7e34fcc in gtk_widget_grab_focus () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#45 0xb7dc5e8e in gtk_list_item_deselect () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#46 0xb7dc8489 in gtk_marshal_BOOL__POINTER () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#47 0xb7dfd419 in gtk_signal_emit_stop_by_name () from
>/usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#48 0xb7dfda59 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#49 0xb7e3c246 in gtk_widget_event () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#50 0xb7dc7df0 in gtk_propagate_event () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#51 0xb7dc82c5 in gtk_main_do_event () from /usr/lib/libgtk-1.2.so.0
>---Type <return> to continue, or q <return> to quit---
>No symbol table info available.
>#52 0xb7f66583 in gdk_event_get () from /usr/lib/libgdk-1.2.so.0
>No symbol table info available.
>#53 0xb7f95681 in g_get_current_time () from /usr/lib/libglib-1.2.so.0
>No symbol table info available.
>#54 0xb7f960f6 in g_main_add_poll () from /usr/lib/libglib-1.2.so.0
>No symbol table info available.
>#55 0xb7dc6ea0 in gtk_main_iteration_do () from /usr/lib/libgtk-1.2.so.0
>No symbol table info available.
>#56 0x080d2166 in TGTKWIDGETSET__APPWAITMESSAGE (this=0xb7b1e014)
> at gtkobject.inc:1798
>No locals.
>#57 0x0807325f in TAPPLICATION__IDLE (WAIT=true, this=0xb7b26014)
> at application.inc:282
> DONE = true
>#58 0x0807472d in TAPPLICATION__HANDLEMESSAGE (this=0xb7b26014)
> at application.inc:912
>No locals.
>#59 0x08074aa0 in RUNMESSAGE (parentfp=0xbfecbbe0) at application.inc:1029
>No locals.
>#60 0x080749eb in TAPPLICATION__RUNLOOP (this=0xb7b26014)
> at application.inc:1039
>No locals.
>#61 0x0807c4bf in TWIDGETSET__APPRUN (ALOOP=0x80749ac
><TAPPLICATION__RUNLOOP>,
> this=0xb7b1e014) at interfacebase.inc:42
>No locals.
>#62 0x08074998 in TAPPLICATION__RUN (this=0xb7b26014) at
>application.inc:1018
>No locals.
>#63 0x08053655 in main () at cbt2.lpr:13
>No locals.
>(gdb)
>
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