[提问]紧急求助！！这个问题困扰我很多天了。。。。。 [复制链接]

我原本创建了一个dockwidget然后创建了一个slot，后来把dockwidget名字改了，就出错了。。。
额，这只是其中一个，其他的也都差不多，改了名称，但slot就出错
出错的文件一直是moc_名称.obj：file not found
后来发现在debug中有一个moc_名称.cpp里面有曾经保留的dockwidget的信息，把它修改了再编译通过了
但重新clean再build时候又出现了错误。。。
求高手帮助啊~~~~~~
moc_it_campus.obj:: error:  unresolved external symbol "private: void __thiscall IT_Campus::on_action_Controller_triggered(void)" (?on_action_Controller_triggered@IT_Campus@@AAEXXZ) referenced in function "public: virtual int __thiscall IT_Campus::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@IT_Campus@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
moc_it_campus.obj:: error:  unresolved external symbol "private: void __thiscall IT_Campus::on_action_BulidingTree_triggered(void)" (?on_action_BulidingTree_triggered@IT_Campus@@AAEXXZ) referenced in function "public: virtual int __thiscall IT_Campus::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@IT_Campus@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
moc_it_campus.obj:: error:  unresolved external symbol "private: void __thiscall IT_Campus::on_action_Domitry_triggered(void)" (?on_action_Domitry_triggered@IT_Campus@@AAEXXZ) referenced in function "public: virtual int __thiscall IT_Campus::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@IT_Campus@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
moc_it_campus.obj:: error:  unresolved external symbol "private: void __thiscall IT_Campus::on_dockWidget_visibilityChanged(bool)" (?on_dockWidget_visibilityChanged@IT_Campus@@AAEX_N@Z) referenced in function "public: virtual int __thiscall IT_Campus::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@IT_Campus@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
moc_it_campus.obj:: error:  unresolved external symbol "private: void __thiscall IT_Campus::on_dockWidget_3_visibilityChanged(bool)" (?on_dockWidget_3_visibilityChanged@IT_Campus@@AAEX_N@Z) referenced in function "public: virtual int __thiscall IT_Campus::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@IT_Campus@@UAEHW4Call@QMetaObject@@HPAPAX@Z)

把你源代码放上来看看.

#include "it_campus.h"
#include "ui_it_campus.h"
IT_Campus::IT_Campus(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::IT_Campus)
{
    ui->setupUi(this);
    setCorner(Qt::BottomLeftCorner, Qt::LeftDockWidgetArea);
    setCorner(Qt::BottomRightCorner, Qt::RightDockWidgetArea);
    ui->ConDock->hide();
    ui->BuiDock->hide();
    ui->welcome->show();
    ui->clsPage->hide();
    ui->dormPage->hide();
}
IT_Campus::~IT_Campus()
{
    delete ui;
}
void IT_Campus::on_action_Exit_triggered()
{
    exit(0);
}
void IT_Campus::on_action_Classroom_triggered()
{
    ui->dormPage->hide();
    ui->dormTree->hide();
    ui->welcome->hide();
    ui->clsPage->show();
    ui->ConDock->show();
    ui->BuiDock->show();
    ui->clsTree->show();
}
void IT_Campus::on_action_Dormitry_triggered()
{
    ui->clsPage->hide();
    ui->ConDock->hide();
    ui->clsTree->hide();
    ui->welcome->hide();
    ui->dormTree->show();
    ui->dormPage->show();
    ui->BuiDock->show();
}
void IT_Campus::on_action_BuildingTree_triggered()
{
    if(ui->action_BuildingTree->isChecked())
        ui->BuiDock->show();
    else
        ui->BuiDock->hide();
}
void IT_Campus::on_actionController_triggered()
{
    if(ui->actionController->isChecked())
        ui->ConDock->show();
    else
        ui->ConDock->hide();
}
void IT_Campus::on_BuiDock_visibilityChanged(bool visible)
{
    ui->action_BuildingTree->setChecked(visible);
}
void IT_Campus::on_ConDock_visibilityChanged(bool visible)
{
    ui->actionController->setChecked(visible);
}

删除编译过程中生成的全部中间文件，再编译试试。

是不是你修改了ui文件中的槽然后没有实际定义那个槽？

删掉再重新编译还是不行

是修改了ui，改了控件的名称，然后重新生成了槽，有什么办法可以解决么？

搞不懂什么叫重新生成了槽
从头到尾把原来该做的都做一遍就是了
或者删掉所有的编译时生成的文件，包括debug/release文件夹，各种Makefile，就留下工程的代码重新做一遍还能出问题？

对啊，全部删掉还是错，。。。。。