[D]使用xrced创建的程序界面不能运行解决思路

[D]使用xrced创建的程序界面不能运行
请哪位大侠帮我指正一下,为什么会报错呀?谢谢了!!!

xrc文件:
XML code
<?xml version="1.0" encoding="UTF-8"?>
<resource class="">
  <object class="wxDialog" name="mainDialog">
    <object class="wxComboBox" name="dblistCBox">
      <pos>10,35</pos>
      <size>300,20</size>
      <content>
        <item/>
      </content>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER|wxCB_READONLY</style>
    </object>
    <object class="wxTextCtrl" name="bkdirCtr">
      <pos>10,215</pos>
      <size>300,20</size>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER</style>
    </object>
    <object class="wxStaticText" name="dblistText">
      <pos>10,10</pos>
      <size>300,20</size>
      <label>选择要备份的数据库文件:</label>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER</style>
    </object>
    <object class="wxButton" name="button1">
      <pos>350,15</pos>
      <size>60,40</size>
      <label>Open</label>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSUNKEN_BORDER</style>
    </object>
    <object class="wxStaticText" name="dirText">
      <pos>10,100</pos>
      <size>300,20</size>
      <label>选择要备份的目录:</label>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER</style>
    </object>
    <object class="wxComboBox" name="dirCBox">
      <pos>10,125</pos>
      <size>300,20</size>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER|wxCB_READONLY</style>
    </object>
    <object class="wxButton" name="button2">
      <pos>350,105</pos>
      <size>60,40</size>
      <label>Open</label>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSUNKEN_BORDER</style>
    </object>
    <object class="wxStaticText" name="bkdirText">
      <pos>10,190</pos>
      <size>300,20</size>
      <label>指定备份文件保存路径:</label>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER</style>
    </object>
    <object class="wxButton" name="button3">
      <pos>350,195</pos>
      <size>60,40</size>
      <label>开始备份</label>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSUNKEN_BORDER</style>
    </object>
    <object class="wxButton" name="button4">
      <pos>430,195</pos>
      <size>60,40</size>
      <label>取消备份</label>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSUNKEN_BORDER</style>
    </object>
    <object class="wxGauge" name="gauge">
      <pos>10,250</pos>
      <size>480,30</size>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER</style>
    </object>
    <object class="wxStaticText" name="ztxixiText">
      <pos>10,300</pos>
      <size>480,20</size>
      <fg>#FF8000</fg>
      <bg>#FFFFFF</bg>
      <style>wxSIMPLE_BORDER</style>
    </object>
    <pos>5,5</pos>
    <size>550,400</size>
    <title>TD备份工具</title>
    <centered>1</centered>
    <fg>#000000</fg>
    <bg>#0080FF</bg>
    <style>wxSIMPLE_BORDER|wxDEFAULT_DIALOG_STYLE|wxCAPTION|wxCLOSE_BOX|wxDIALOG_MODAL</style>
  </object>
</resource>