如何检查组合框是下拉列表还是下拉列表?

使用以下代码

if ((m_MyComboBox.GetStyle() & 3) == CBS_SIMPLE)
{
    //SIMPLE
}
if ((m_MyComboBox.GetStyle() & 3) == CBS_DROPDOWN)
{
    //DROPDOWN
}
if ((m_MyComboBox.GetStyle() & 3) == CBS_DROPDOWNLIST)
{
    //DROPDOWNLIST
}

来自winuser.h:

#define CBS_DROPDOWN          0x0002L
#define CBS_DROPDOWNLIST      0x0003L

您需要:

switch(m_MyComboBox.GetStyle() & CBS_DROPDOWNLIST)
{
  case CBS_SIMPLE:
    // do stuff
    break;

  case CBS_DROPDOWN:
    // do stuff
    break;

  case CBS_DROPDOWNLIST:
    // do stuff
    break;
}