Qt笔记（十七）cmake编译Qt项目
- 1. 文件内容与文件结构
- 1.1.文件目录
- 1.2. CMakeLists.txt内容
- 1.3. main.cpp文件
- 1.4. mouseevent.h
- 1.5. mouseevent.cpp
- 1.6. 生成Visual Studio项目后编译报错
- 1.7. 界面显示中文乱码问题
1. 文件内容与文件结构
1.1.文件目录
文件夹下文件，其中CMakeLists.txt是我新添加的。
MouseEvent
CMakeLists.txt
main.cpp
mouseevent.cpp
mouseevent.h
1.2. CMakeLists.txt内容
cmake_minimum_required(VERSION 3.5)
project(mouseEvent LANGUAGES CXX)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
find_package(Qt5 COMPONENTS Widgets REQUIRED)
include_directories(
${PROJECT_SOURCE_DIR}/include
${CMAKE_CURRENT_BINARY_DIR}
)
# 由于采用set(CMAKE_AUTOUIC ON)的方式处理ui文件，编译时会报错找不到ui文件。
# 需要将ui文件夹加入AUTOUIC的搜索目录，这样AUTOUIC处理时才能找到ui文件。
set(CMAKE_AUTOUIC_SEARCH_PATHS ${CMAKE_SOURCE_DIR}/ui)
file(GLOB PRO_SRC ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)
file(GLOB PRO_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/*.h)
file(GLOB PRO_UI ${CMAKE_CURRENT_SOURCE_DIR}/*.ui)
file(GLOB PRO_RESOURCES ${CMAKE_CURRENT_SOURCE_DIR}/*.qrc)
add_executable(mouseEvent
${PRO_SRC}
${PRO_INCLUDE}
${PRO_UI}
${PRO_RESOURCES}
)
target_link_libraries(mouseEvent PRIVATE Qt5::Widgets)
1.3. main.cpp文件
#include "mouseevent.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MouseEvent w;
w.show();
return a.exec();
}
1.4. mouseevent.h
#ifndef MOUSEEVENT_H
#define MOUSEEVENT_H
#include <QMainWindow>
#include <QLabel>
#include <QStatusBar>
#include <QMouseEvent>
class MouseEvent : public QMainWindow
{
Q_OBJECT
public:
MouseEvent(QWidget *parent = 0);
~MouseEvent();
protected:
void mousePressEvent(QMouseEvent *e);
void mouseMoveEvent(QMouseEvent *e);
void mouseReleaseEvent(QMouseEvent *e);
void mouseDoubleClickEvent(QMouseEvent *e);
private:
QLabel *statusLabel;
QLabel *MousePosLabel;
};
#endif // MOUSEEVENT_H
1.5. mouseevent.cpp
#include "mouseevent.h"
MouseEvent::MouseEvent(QWidget *parent)
: QMainWindow(parent)
{
setWindowTitle(tr(u8"鼠标事件")); //设置窗体的标题
statusLabel = new QLabel; //(a)
statusLabel->setText(tr(u8"当前位置："));
statusLabel->setFixedWidth(100);
MousePosLabel = new QLabel; //(b)
MousePosLabel->setText(tr(""));
MousePosLabel->setFixedWidth(100);
statusBar()->addPermanentWidget(statusLabel); //(c)
statusBar()->addPermanentWidget(MousePosLabel);
this->setMouseTracking(true); //(d)
resize(400,200);
}
void MouseEvent::mousePressEvent(QMouseEvent *e)
{
QString str="("+QString::number(e->x())+","+QString::number(e->y()) +")"; //(a)
if(e->button()==Qt::LeftButton)
{
statusBar()->showMessage(tr(u8"左键：")+str);
}
else if(e->button()==Qt::RightButton)
{
statusBar()->showMessage(tr(u8"右键：")+str);
}
else if(e->button()==Qt::MidButton)
{
statusBar()->showMessage(tr(u8"中键：")+str);
}
}
void MouseEvent::mouseMoveEvent(QMouseEvent *e)
{
MousePosLabel->setText("("+QString::number(e->x())+","+QString::number(e->y())+")");
}
void MouseEvent::mouseReleaseEvent(QMouseEvent *e)
{
QString str="("+QString::number(e->x())+","+QString::number(e->y()) +")";
statusBar()->showMessage(tr(u8"释放在：")+str,3000);
}
void MouseEvent::mouseDoubleClickEvent(QMouseEvent *e){}
MouseEvent::~MouseEvent()
{
}
1.6. 生成Visual Studio项目后编译报错
warning C4819: The file contains a character that cannot be represented in the current code page (936). Save the file in Unicode format to prevent data loss
解决办法：warning C4819 解决方案 warning C4819: The file contains a character that cannot be represented in the cu_warning c4819 the file contains a character that c-CSDN博客
修改编码方式为：打开出现warning的文件，Ctrl+A全选，然后在文件菜单：file->advanced save options （高级保存选项），在弹出的选项中选择新的编码方式为：UNICODE codepage 1200 ，点击确定，问题就解决了。
1.7. 界面显示中文乱码问题
如下，在中文前添加u8。(上面列出的代码是修改后的代码)
statusBar()->showMessage(tr(u8"左键：")+str);
运行结果如下：
