How to solve the problem that the maximum scroll value of a scroll bar in VC cannot exceed 32767

Reference Article: Http://www.docin.com/p-65394443.html

Specifically, NPOs variables in onhscroll are not used.

Instead, use the ntrackpos variable in scrollinfo.

The reason is that NPOs is a uint type and the maximum value is 32767. If it is larger, It is a negative value.

The ntrackpos type is int and has a large range.

However, generally speaking, uint must be larger than int in the positive value range. I don't know why, is it Microsoft's aim to be compatible with 16-bit machines?

Scrollinfo;

M_ctlscrollh.getscrollinfo (& scrollinfo, sif_all );

M_ctlscrollh.setscrollpos (scrollinfo. ntrackpos );