VS2010 编译的Direct3D程序不能运行解决方法

用VS2010创建了一个最简单的窗口程序(.net 4.0)，但是只有包含了Microsoft.DirectX.Direct3D的代码，程序运行到那里就假死，调试时连函数都不能跟进去。

解决方法是修改app.config文件添加如下节点配置

<configSections>
    <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
      <section name="OpenAWindow.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
    </sectionGroup>
  </configSections>
  <userSettings>
    <OpenAWindow.Properties.Settings>
      <setting name="formState" serializeAs="String">
        <value>Maximized</value>
      </setting>
    </OpenAWindow.Properties.Settings>
  </userSettings>