使用QT6.4 编写一个插件,实现接口自定义标题栏
时间: 2024-01-21 16:17:55 浏览: 151
Qt 实现 自定义窗口标题栏
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好的,下面是一个简单的实现例子:
首先,在QT项目中创建一个插件项目。
在插件项目中的.pro文件中添加如下代码:
```
TARGET = CustomTitleBar
TEMPLATE = lib
CONFIG += plugin
QT += widgets
HEADERS += customtitlebar.h
SOURCES += customtitlebar.cpp
```
然后,在customtitlebar.h中定义我们需要的接口,包括设置标题、设置图标、设置背景颜色等等:
```c++
#ifndef CUSTOMTITLEBAR_H
#define CUSTOMTITLEBAR_H
#include <QWidget>
class CustomTitleBar : public QWidget
{
Q_OBJECT
public:
explicit CustomTitleBar(QWidget *parent = nullptr);
// 接口函数
virtual void setTitle(const QString &title) = 0;
virtual void setIcon(const QIcon &icon) = 0;
virtual void setBackgroundColor(const QColor &color) = 0;
signals:
};
#endif // CUSTOMTITLEBAR_H
```
在customtitlebar.cpp中实现接口函数:
```c++
#include "customtitlebar.h"
#include <QLabel>
#include <QHBoxLayout>
CustomTitleBar::CustomTitleBar(QWidget *parent) : QWidget(parent)
{
QLabel *titleLabel = new QLabel(this);
QHBoxLayout *layout = new QHBoxLayout(this);
layout->addWidget(titleLabel);
setLayout(layout);
}
```
这里只是一个简单的例子,我们可以根据实际需求添加更多的接口函数和实现。
最后,我们需要在插件中导出这个类:
```c++
#include "customtitlebar.h"
#include <QtPlugin>
QT_BEGIN_NAMESPACE
class CustomTitleBarInterface : public QObject, public QDesignerCustomWidgetInterface
{
Q_OBJECT
Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QDesignerCustomWidgetInterface")
Q_INTERFACES(QDesignerCustomWidgetInterface)
public:
CustomTitleBarInterface(QObject *parent = nullptr);
QString name() const;
QString group() const;
QString toolTip() const;
QString whatsThis() const;
QString includeFile() const;
QIcon icon() const;
bool isContainer() const;
QWidget *createWidget(QWidget *parent);
bool domXml() const;
private:
bool initialized = false;
};
QT_END_NAMESPACE
CustomTitleBarInterface::CustomTitleBarInterface(QObject *parent)
: QObject(parent)
{
}
QString CustomTitleBarInterface::name() const
{
return QStringLiteral("CustomTitleBar");
}
QString CustomTitleBarInterface::group() const
{
return QStringLiteral("Custom Widgets");
}
QString CustomTitleBarInterface::toolTip() const
{
return QStringLiteral("Custom title bar widget");
}
QString CustomTitleBarInterface::whatsThis() const
{
return toolTip();
}
QString CustomTitleBarInterface::includeFile() const
{
return QStringLiteral("customtitlebar.h");
}
QIcon CustomTitleBarInterface::icon() const
{
return QIcon();
}
bool CustomTitleBarInterface::isContainer() const
{
return false;
}
QWidget *CustomTitleBarInterface::createWidget(QWidget *parent)
{
return new CustomTitleBar(parent);
}
bool CustomTitleBarInterface::domXml() const
{
return true;
}
Q_EXPORT_PLUGIN2(customtitlebar, CustomTitleBarInterface)
```
这里我们使用了QT的插件机制,将我们定义的接口类CustomTitleBarInterface导出到插件中。
最后,在我们需要使用自定义标题栏的代码中,加载这个插件并设置标题栏:
```c++
QDesignerCustomWidgetCollectionInterface *pluginInterface = QDesignerCustomWidgetCollectionInterface::customWidgets();
QDesignerCustomWidgetInterface *customTitleBarPlugin = pluginInterface->customWidget("CustomTitleBar");
if (customTitleBarPlugin) {
QWidget *customTitleBar = customTitleBarPlugin->createWidget(nullptr);
customTitleBarPlugin->initialize(customTitleBar);
customTitleBarPlugin->setIcon(QIcon(":/images/icon.png"));
customTitleBarPlugin->setTitle("Custom Title Bar");
customTitleBarPlugin->setBackgroundColor(Qt::red);
mainWindow->setWindowTitle("Main Window");
mainWindow->setWindowIcon(QIcon(":/images/icon.png"));
mainWindow->setCentralWidget(new QTextEdit(mainWindow));
mainWindow->setMenuWidget(customTitleBar);
}
```
这样,我们就可以在主窗口中使用自定义的标题栏了。当然,这只是一个简单的例子,实际使用中可能还需要添加更多的功能和接口。
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