Tab controls
When PerpendicularText is enabled, the tab labels are drawn perpendicular to the tab page, resulting in narrower tabs. When PerpendicularText is not enabled, text runs parallel to the edge of the tab page, resulting in wider tabs.
To select a perpendicular orientation for tab
text:
Select the Perpendicular Text check box on the General page of the control’s Properties view.
The PerpendicularText property takes a boolean value.
The following line specifies that tab labels are perpendicular to the tab page.
tab_1.PerpendicularText = TRUE
