void UiNumericDisplay::removeChar1(){
if(_l1str.Length() == 1){
setText1(L"0");
_isEmpty = true;
return;
}
_l1str = _l1str.SubStr(0,_l1str.Length() - 1);
}
void UiNumericDisplay::addChar1(wchar_t chCharCode){
//only accept 0-9,dot,-
int inputlen = _l1str.Length();
//排除连续输入0的问题
if(inputlen == 1 && _l1str == L"0" && chCharCode == '0') return;
//排除在输入运算符后输入dot的问题
if(_isEmpty && chCharCode == '.'){
_isEmpty = false;
_l1str = L"0.";
_dotPos = 2;
return;
}
//only 2 digital after dot
if(chCharCode != 0x08 && _dotPos != 0 && (inputlen - _dotPos > 1)) return;
//only 8 digital before dot
if(chCharCode != 0x08 && chCharCode != '.' && _dotPos == 0 && inputlen > 8) return;
if(chCharCode < '0' || chCharCode > '9'){
if(chCharCode != '.' && chCharCode != '-' && chCharCode != 0x08){
return;
}
if(chCharCode == '-'){
if(_isEmpty) return;
if(_l1str.C_Str()[0] == '-'){
_l1str = _l1str.SubStr(1,_l1str.Length() - 1);
}else{
CMzString Ssign = L"-";
_l1str = Ssign + _l1str;
}
return;
}
if(chCharCode == '.'){
if(_dotPos != 0){
return;
}else{
_dotPos = inputlen + 1;
chCharCode = '.';
}
}
if(chCharCode == 0x08){ //backspace
if(inputlen == _dotPos){
_dotPos = 0;
}
removeChar1();
return;
}
}
addChar(chCharCode,_l1str);
if(_isEmpty) _isEmpty = false;
}