[Gambas-bugtracker] Bug #1333: Combobox

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.1333&from=L21haW4-

Claude DESSERÉ reported a new bug.

Summary
-------

Combobox

Type             : Bug
Priority         : Medium
Gambas version   : Unknown
Product          : Unknown


Description
-----------

re Hi,
381/5000
when the ComboBox is filled and
the distance between the ComboBox and the bottom of the screen
is less than the height of the list: (n items) x height of 1 item,
the drop-down list appears with empty items above the level of the ComboBox.
this only happens with ReadOnly = True!
I tried to make a screen entry, but ineffective when the list is unrolled.

Code source :
# Gambas Form File 3.0

{ Form Form
  MoveScaled(0,0,56,49)
  { ComboBox1 ComboBox
    MoveScaled(1,1,20,4)
    ReadOnly = True
  }
  { cmd20 Button
    MoveScaled(22,1,33,4)
    Text = ("avec 20 items")
  }
  { cmd40 Button
    MoveScaled(22,6,33,4)
    Text = ("avec 40 items")
  }
}

' Gambas class file

Public Sub cmd40_Click()
Dim intX As Integer

ComboBox1.Clear
For intX = 0 To 39
    ComboBox1.Add(CStr(intX))
Next
ComboBox1.Index = 0

End

Public Sub cmd20_Click()
Dim intX As Integer

ComboBox1.Clear
For intX = 0 To 19
    ComboBox1.Add(CStr(intX))
Next
ComboBox1.Index = 0

End


System information
------------------

[System]
Gambas=3.11.2
OperatingSystem=Linux
Kernel=4.15.0-22-generic
Architecture=x86_64
Distribution=Ubuntu 18.04 LTS
Desktop=MATE
Theme=Gtk
Language=fr_FR.UTF-8
Memory=7853M

[Libraries]
Cairo=libcairo.so.2.11510.0
Curl=libcurl.so.4.5.0
DBus=libdbus-1.so.3.19.4
GStreamer=libgstreamer-1.0.so.0.1400.0
GTK+2=libgtk-x11-2.0.so.0.2400.32
GTK+3=libgtk-3.so.0.2200.30
OpenGL=libGL.so.1.0.0
Poppler=libpoppler.so.73.0.0
QT4=libQtCore.so.4.8.7
QT5=libQt5Core.so.5.9.5
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Environment]
COMPIZ_CONFIG_PROFILE=mate
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DEFAULTS_PATH=/usr/share/gconf/mate.default.path
DESKTOP_SESSION=mate
DISPLAY=:0
GB_GUI=gb.qt4
GDMSESSION=mate
GDM_LANG=fr_FR
GIO_LAUNCHED_DESKTOP_FILE=<home>/Bureau/gambas3.desktop
GIO_LAUNCHED_DESKTOP_FILE_PID=2390
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
GTK_MODULES=appmenu-gtk-module:gail:atk-bridge:canberra-gtk-module
GTK_OVERLAY_SCROLLING=0
HOME=<home>
INSIDE_CAJA_PYTHON=
LANG=fr_FR.UTF-8
LANGUAGE=fr_FR
LOGNAME=<user>
MANDATORY_PATH=/usr/share/gconf/mate.mandatory.path
MATE_DESKTOP_SESSION_ID=this-is-deprecated
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
PWD=<home>
QT_ACCESSIBILITY=1
QT_AUTO_SCREEN_SCALE_FACTOR=0
QT_QPA_PLATFORMTHEME=gtk2
QT_SCALE_FACTOR=1
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/1292,unix/<hostname>:/tmp/.ICE-unix/1292
SHELL=/bin/bash
SHLVL=0
SSH_AGENT_PID=1615
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
UBUNTU_MENUPROXY=1
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CONFIG_DIRS=/etc/xdg/xdg-mate:/etc/xdg
XDG_CURRENT_DESKTOP=MATE
XDG_DATA_DIRS=/usr/share/mate:/usr/local/share:/usr/share:/var/lib/snapd/desktop
XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/<user>
XDG_RUNTIME_DIR=/run/user/1000
XDG_SEAT=seat0
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_DESKTOP=mate
XDG_SESSION_ID=c2
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SESSION_TYPE=x11
XDG_VTNR=7