Introduction

To assist you with visually getting the drives of a computer, the VCL provides the drive combo box. To get the drive combo box, in the Win 3.1 section of the Tool Palette, click the TDriveComboBox button and click a form (or other container). This would add the control:

The drive combo box is represented in the VCL by the TDriveComboBox class. The TDriveComboBox class is defined in the FileCtrl.hpp header file.

To use a drie combo box, the user can click the down-pointing arrow of the control. This would display the list of drives:

The user can then click the desired drive. To give you access to the drive that is currently selected, the TDriveComboBox class is equipped with a property named Drive:

__property wchar_t Drive = {read=GetDrive,write=SetDrive};

This property produces the letter of the drive that was selected or is displaying in the control.