In VC, The ComboBox drop-down list does not show data or the drop-down table height is too small.

From: http://hi.baidu.com/%C4%BE%D2%B6%C1%B5/blog/item/9fd0e609cea3443de82488ce.html

Today, many people in csdn asked a question about the problem that the combo box drop-down list in VC does not display data. They added data correctly, however, clicking "combo box" at run time does not display data. The reason is very simple. When using the combo box control, there is a setting to display the size of the List area. The default display area is too small, therefore, data cannot be displayed. After you click the mouse in the lower triangle of the combo box, a drop-down icon is displayed, showing the list area to the drop-down list.

In addition, someone asked how to add data to the combo box. There are two methods: One: Right-click, select "attribute"-"data", and enter it, A row indicates a data record. Press Ctrl + enter to wrap the line. Add ComboBox. addstring ("Data name") to oninitdialog "). Values of the added items are arranged in ascending order, and the last added data item has the minimum value. The default value is 0. ComboBox. setcursel (0); you can set combo box to display 0th data items by default.

There are many usage cases for ComboBox, so I will not detail them in detail. For details, refer to msdn.