Thanks very much for all your reply.

I intended to put an attachment of my source in tar.bz2, but due to my very very bad internet connection, I post them here. Sorry for the long codes.

The main problem is displaying dialog CreateHull.ui when I click on a toolbar. Below is the source code of it. I hope you can reproduce the error. Maybe later when my internet connection get better, I will attach the source in tar.bz2 format.

I compile and run the code in two different computer. One on Debian Etch using libqt3-mt 3.3.7-4 and gcc version 3.3.6, while the other on Ubuntu Breezy using my own compiled qt3 3.3.7 and gcc 4.0.2. The program run normal on Ubuntu, when I click the toolbar, the CreateHull dialog pop up. But when I run the same program on Debian, the program exited with segmentation error.

CreateHullBase.ui
Qt Code: 
  1. <!DOCTYPE UI><UI version="3.3" stdsetdef="1">
  2. <class>CreateHullBase</class>
  3. <widget class="QDialog">
  4.     <property name="name">
  5.         <cstring>CreateHullBase</cstring>
  6.     </property>
  7.     <property name="geometry">
  8.         <rect>
  9.             <x>0</x>
  10.             <y>0</y>
  11.             <width>201</width>
  12.             <height>122</height>
  13.         </rect>
  14.     </property>
  15.     <property name="caption">
  16.         <string>Outer Hull</string>
  17.     </property>
  18.     <property name="icon">
  19.         <pixmap>image0</pixmap>
  20.     </property>
  21.     <grid>
  22.         <property name="name">
  23.             <cstring>unnamed</cstring>
  24.         </property>
  25.         <widget class="QLayoutWidget" row="0" column="0">
  26.             <property name="name">
  27.                 <cstring>layout7</cstring>
  28.             </property>
  29.             <grid>
  30.                 <property name="name">
  31.                     <cstring>unnamed</cstring>
  32.                 </property>
  33.                 <widget class="QLineEdit" row="0" column="1">
  34.                     <property name="name">
  35.                         <cstring>txtBreadth</cstring>
  36.                     </property>
  37.                 </widget>
  38.                 <widget class="QLineEdit" row="1" column="1">
  39.                     <property name="name">
  40.                         <cstring>txtDepth</cstring>
  41.                     </property>
  42.                 </widget>
  43.                 <widget class="QLabel" row="0" column="0">
  44.                     <property name="name">
  45.                         <cstring>textLabel1</cstring>
  46.                     </property>
  47.                     <property name="text">
  48.                         <string>Breadth :</string>
  49.                     </property>
  50.                 </widget>
  51.                 <widget class="QLabel" row="1" column="0">
  52.                     <property name="name">
  53.                         <cstring>textLabel2</cstring>
  54.                     </property>
  55.                     <property name="text">
  56.                         <string>Depth :</string>
  57.                     </property>
  58.                 </widget>
  59.             </grid>
  60.         </widget>
  61.         <spacer row="1" column="0">
  62.             <property name="name">
  63.                 <cstring>spacer6</cstring>
  64.             </property>
  65.             <property name="orientation">
  66.                 <enum>Vertical</enum>
  67.             </property>
  68.             <property name="sizeType">
  69.                 <enum>Expanding</enum>
  70.             </property>
  71.             <property name="sizeHint">
  72.                 <size>
  73.                     <width>20</width>
  74.                     <height>20</height>
  75.                 </size>
  76.             </property>
  77.         </spacer>
  78.         <widget class="QLayoutWidget" row="2" column="0">
  79.             <property name="name">
  80.                 <cstring>layout8</cstring>
  81.             </property>
  82.             <hbox>
  83.                 <property name="name">
  84.                     <cstring>unnamed</cstring>
  85.                 </property>
  86.                 <spacer>
  87.                     <property name="name">
  88.                         <cstring>spacer7</cstring>
  89.                     </property>
  90.                     <property name="orientation">
  91.                         <enum>Horizontal</enum>
  92.                     </property>
  93.                     <property name="sizeType">
  94.                         <enum>Expanding</enum>
  95.                     </property>
  96.                     <property name="sizeHint">
  97.                         <size>
  98.                             <width>20</width>
  99.                             <height>20</height>
  100.                         </size>
  101.                     </property>
  102.                 </spacer>
  103.                 <widget class="QPushButton">
  104.                     <property name="name">
  105.                         <cstring>btnCreate</cstring>
  106.                     </property>
  107.                     <property name="text">
  108.                         <string>&amp;Create</string>
  109.                     </property>
  110.                     <property name="accel">
  111.                         <string>Alt+C</string>
  112.                     </property>
  113.                 </widget>
  114.                 <widget class="QPushButton">
  115.                     <property name="name">
  116.                         <cstring>btnClose</cstring>
  117.                     </property>
  118.                     <property name="text">
  119.                         <string>Close</string>
  120.                     </property>
  121.                 </widget>
  122.             </hbox>
  123.         </widget>
  124.     </grid>
  125. </widget>
  126. <images>
  127.     <image name="image0">
  128.         <data format="PNG" length="477">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</data>
  129.     </image>
  130. </images>
  131. <connections>
  132.     <connection>
  133.         <sender>btnClose</sender>
  134.         <signal>clicked()</signal>
  135.         <receiver>CreateHullBase</receiver>
  136.         <slot>accept()</slot>
  137.     </connection>
  138. </connections>
  139. <layoutdefaults spacing="6" margin="11"/>
  140. </UI>
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