An application sends a ZGM_AUTOSIZE_ALL_COLUMNS message to adjust each ZeeGrid column to fit the maximum length text in each column.
ZGM_AUTOSIZE_ALL_COLUMNS
wParam = 0; //not used; must be zero
lParam = 0; //not used; must be zero
This message does not return a value.
This message has the same effect on the ZeeGrid as if the user had double-clicked the right side of each column header.