使用qt ui中的动态属性功能。控制输入输出的最大最小值，以及小数点位置控制。 通过property来获得属性值 //qlineEdit中的动态属性带入到SoftkeyLineEdit中 if(originalLineEdit->property("VarType").isValid()) { myLineEdit->type = originalLineEdit->property("VarType").toInt(); myLineEdit->numkeyboard->type = myLineEdit->type; } if(originalLineEdit->property("VMax").isValid()) { myLineEdit->Vmax = originalLineEdit->property("VMax").toLongLong(); myLineEdit->numkeyboard->Vmax = myLineEdit->Vmax; myLineEdit->numkeyboard->VRange(); } if(originalLineEdit->property("VMin").isValid()) { myLineEdit->Vmin = originalLineEdit->property("VMin").toLongLong(); myLineEdit->numkeyboard->Vmin = myLineEdit->Vmin; myLineEdit->numkeyboard->VRange(); }