You can change the font of the tab labels by using the EasyTab_SetAttribute function and setting the Tab Label Metafont. You will need to create a meta font with CreateMetaFont first that specifies point size, bold, etc. For example, open the \samples\userint\custctrl\easytab\simpdemo.prj and add the following two lines after the EasyTab_LoadPanels call in the main function:
CreateMetaFont ("tabfont", "Arial", 14, 1, 0, 0, 0);
EasyTab_SetAttribute (panel, tabCtrl, ATTR_EASY_TAB_META_FONT,
"tabfont");
This will give you a font of Arial 14 Bold.
Best Regards,
Chris Matthews
Measurement Studio Support Manager