VClearButtonList
Name
VClearButtonList - deletes all Button Items.
Synopsis
VClearButtonList()
Description
VClearButtonList deletes all the Button Items.
Return Value
0 - work successfully.
Parameters
None.
Side Effects
The Button Item list is erased and its allocated space is freed.
Entry Conditions
VCreateColormap should be called earlier, else VClearButtonList prints
an error message to the standard error stream, produces a core dump file
and exits from the current process.
Related Functions
VAddButton,
VDeleteButton,
VSetButtonOff.