c++ - MFC - Remove leading zeros for CEdit number control -


i find cedit control has option 'number' in property, can prevent user enter non-digit character textbox - cedit number control now. if there option 'number', think maybe there way remove leading zeros cedit simple option 'number'.

i have tried dialog data exchange hope remove leading zeros me automatically, won't.

then think way add en_killfocus message each of cedit number controls, find exhausted.

so think better way add en_killfocus, cedit number controls lose focus event point 1 function, in function i'll remove leading 0 'current' control, in c# can 'current' control, in c++ don't know if it's supported.

or inherit cedit make ceditnum - implement lose focus remove leading zeros feature, solution, can't design on visual studio design window (i think). hope there solution similar this solution (which solution draw&drop problem)

anyway, before apply final solution (en_killfocus), want make sure if there better way - least implement, reuse existing implement of mfc.

a little explain remove leading zeros: enter: 00001 cedit control, lose focus, cedit control show you: 1. idea ms excel when enter number cell.

"but cedit number controls lose focus event point 1 function"

that true, control id of control that's lost focus parameter.

add message table, replace idc_first, idc_last first , last ids of edit controls, or use 0, 0xffffffff all.

on_control_range(en_killfocus, idc_first, idc_last, onkillfocus).

here signature of onkillfocus, , how cwnd apply changes.

void cmydialogclass::onkillfocus(uint nid)  {     // can further check if id 1 of interest here...     // if edit control control ids not contiguous, example.      // can cedit* here, if used ddx map      // control cedit.       cwnd* pctrl = getdlgitem(nid);     if (pctrl)     {         cstring str;         pctrl->getwindowtext(str);         // remove zeroes, or format like....         str.format(_t("%d"), _tcstoi(str));         pctrl->setwindowtext(str);     } }  // if mapped control cedit, here's how can safely           // pointer cedit  cedit* pedit = (cedit*)getdlgitem(nid); assert_kindof(cedit, pedit);  // debug check if (pedit && pedit->iskindof(runtime_class(cedit)))  // standard check { // .... }

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