我想知道当我调用 QWidget-close() 时会发生什么我在编写了一个设置函数后调用了它，这禁用了我的一些插槽以被调用。
之前（产生奇怪的行为）：
pGrpCfg->setupGrpConfig();
pGrpCfg->close();
pGrpCfg->show();
after(ok):
pGrpCfg->close();
pGrpCfg->setupGrpConfig();
pGrpCfg->show();
This is my function. The only thing I suspect could have an impact on it is the Signal connections(I would like to add that these connections start in the constructor where I use QSignalMapper):
void grpConfig::setupGrpConfig(){
disconnect(signalMapper, SIGNAL(mapped(int)), this, SIGNAL(txGrpComboBoxCurItemChanged(const int)));
disconnect(this, SIGNAL(txGrpComboBoxCurItemChanged(const int)),this,SLOT(updateTxFailOrderLayouts(int)));
myFPS->getData(REQUEST_SYSTEM_CONFIGURATION);
int numTxChains=myFPS->SystemData.NumberOfTransmitterChainsInSystem;
grpList.clear();
grpList.append("Select group");
for(int i=0;i<MAX_GROUPS;i++){
myFPS->getData(REQUEST_GROUP_INFORMATION,i);
grpCfgEleList.at(i)->ui.leGrpName->setText(myFPS->GroupData.Group[i].Name);
grpList.append(myFPS->GroupData.Group[i].Name);
}
for(int i=0;i<numTxChains;i++){
myFPS->getData(REQUEST_TX_CONFIGURATION,i);
txNameList.at(i)->setVisible(true);
txNameList.at(i)->setText(myFPS->TransmitterConfigurationData[i].Name);
txGrpCBlist.at(i)->setVisible(true);
txGrpCBlist.at(i)->clear();
txGrpCBlist.at(i)->addItems(grpList);
txGrpCBlist.at(i)->setCurrentIndex(myFPS->TransmitterConfigurationData[i].Group+INDEX_OFFSET);
}
for(int i=numTxChains;i<MAX_NUMBER_OF_TRANSMITTERS;i++){
txNameList.at(i)->setVisible(false);
txGrpCBlist.at(i)->setVisible(false);
}
for(int i=0;i<MAX_GROUPS;i++){
updateGrpFailover(i, STAY,-1);
}
//need to wait till setup is complete to activate these signals (populating comboboxes overwrote UDP structs with false data)
connect(signalMapper, SIGNAL(mapped(int)), this, SIGNAL(txGrpComboBoxCurItemChanged(const int)));
connect(this, SIGNAL(txGrpComboBoxCurItemChanged(const int)),this,SLOT(updateTxFailOrderLayouts(int)));
}