VS复制项目
在使用VS的过程中,有的时候我们需要复制我们已经存在的项目.
我们可以先创建一个新的项目.
接着把需要复制的项目的文件复制粘贴到新的项目文件夹中.
不要忘记添加现有项目.
CFrameLessWidgetBase.h
#pragma once
#include <QWidget>
class CFrameLessWidgetBase : public QWidget{
QOBJECT_H
public:
CFrameLessWidgetBase(QWidget* p = nullptr);
~CFrameLessWidgetBase();
private:
protected:
bool nativeEvent(const QByteArray& eventType, void* message, qintptr* result) override;
private:
int m_nBorderWidth = 10;
};
CFrameLessWidgetBase.cpp
#include "CFrameLessWidgetBase.h"
#include <qt_windows.h>
#include <windows.h>
#include <windowsx.h>
#pragma comment(lib, "user32.lib")
#pragma comment(lib,"dwmapi.lib")
CFrameLessWidgetBase::CFrameLessWidgetBase(QWidget* p)
:QWidget(p) {
this->setWindowFlags(Qt::FramelessWindowHint);
}
CFrameLessWidgetBase:: ~CFrameLessWidgetBase() {};
bool CFrameLessWidgetBase::nativeEvent(const QByteArray& eventType, void* message, qintptr* result) {
MSG* param = static_cast<MSG*>(message);
switch (param->message) {
case WM_NCHITTEST:
{
/*int nX = GET_X_LPARAM(param->lParam) - this->geometry().x();
int nY = GET_Y_LPARAM(param->lParam) - this->geometry().y();*/
QPoint globalPos = QCursor::pos(); // 获取鼠标的全局坐标
QPoint localPos = this->mapFromGlobal(globalPos); // 转换为窗口坐标
int nX = localPos.x(); // 现在的 nX 应该是相对于窗口的坐标
int nY = localPos.y();
//if (childAt(nX, nY) != nullptr)
// return QWidget::nativeEvent(eventType, message, result);
if (nX > m_nBorderWidth && nX < this->width() - m_nBorderWidth &&
nY > m_nBorderWidth && nY < this->height() - m_nBorderWidth) {
if (childAt(nX, nY) != nullptr)
return QWidget::nativeEvent(eventType, message, result);
}
if ((nX > 0) && (nX < m_nBorderWidth))
*result = HTLEFT;
if ((nX > this->width() - m_nBorderWidth) && (nX < this->width()))
*result = HTRIGHT;
if ((nY > 0) && (nY < m_nBorderWidth))
*result = HTTOP;
if ((nY > this->height() - m_nBorderWidth) && (nY < this->height()))
*result = HTBOTTOM;
if ((nX > 0) && (nX < m_nBorderWidth) && (nY > 0)
&& (nY < m_nBorderWidth))
*result = HTTOPLEFT;
if ((nX > this->width() - m_nBorderWidth) && (nX < this->width())
&& (nY > 0) && (nY < m_nBorderWidth))
*result = HTTOPRIGHT;
if ((nX > 0) && (nX < m_nBorderWidth)
&& (nY > this->height() - m_nBorderWidth) && (nY < this->height()))
*result = HTBOTTOMLEFT;
if ((nX > this->width() - m_nBorderWidth) && (nX < this->width())
&& (nY > this->height() - m_nBorderWidth) && (nY < this->height()))
*result = HTBOTTOMRIGHT;
return true;
}
}
return false;
}
将相关的代码放到一个类里面.
将主widget继承这个类.
CTitleBar.h
#pragma once
#include <QWidget>
#include <QLabel>
#include <QPushButton>
class CTitleBar : public QWidget
{
Q_OBJECT
public:
CTitleBar(QWidget* p = nullptr);
~CTitleBar();
private:
void initUI();
private:
void mousePressEvent(QMouseEvent* event) override;
void mouseDoubleClickEvent(QMouseEvent* event) override;
private slots:
void onClicked();
signals:
void sig_close();
private:
QLabel* Label_mpLogo;
QLabel* Label_mpTitleText;
QPushButton* Btn_mpSet;
QPushButton* Btn_mpMin;
QPushButton* Btn_mpMax;
QPushButton* Btn_mpClose;
};
void mouseDoubleClickEvent(QMouseEvent* event) override;
鼠标双击事件.private slots: void onClicked();
自定义槽函数.signals: void sig_close();
自定义信号.
CTitleBar.cpp
#include "CTitleBar.h"
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <qt_windows.h>
#include <QPushButton>
CTitleBar::CTitleBar(QWidget* p)
:QWidget(p) {
initUI();
}
CTitleBar::~CTitleBar() {}
void CTitleBar::initUI() {
setAttribute(Qt::WA_StyledBackground);
this->setStyleSheet("background-color:rgb(156,156,156)");
this->setFixedHeight(32);
Label_mpLogo = new QLabel(this);
Label_mpTitleText = new QLabel(this);
Btn_mpSet = new QPushButton(this);
Btn_mpMin = new QPushButton(this);
Btn_mpMax = new QPushButton(this);
Btn_mpClose = new QPushButton(this);
Label_mpLogo->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/title_icon.png);");
Btn_mpSet->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/set.svg);");
Btn_mpMin->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/min.svg);");
Btn_mpMax->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/normal.svg);");
Btn_mpClose->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/close.svg);");
Label_mpLogo->setFixedSize(24, 24);
Label_mpTitleText->setText("我是标题");
Label_mpTitleText->setFixedWidth(120);
Btn_mpSet->setFixedSize(24, 24);
Btn_mpMin->setFixedSize(24, 24);
Btn_mpMax->setFixedSize(24, 24);
Btn_mpClose->setFixedSize(24, 24);
QHBoxLayout* Layout_pHTitle = new QHBoxLayout(this);
Layout_pHTitle->addWidget(Label_mpLogo);
Layout_pHTitle->addWidget(Label_mpTitleText);
Layout_pHTitle->addStretch();
Layout_pHTitle->addWidget(Btn_mpSet);
Layout_pHTitle->addWidget(Btn_mpMin);
Layout_pHTitle->addWidget(Btn_mpMax);
Layout_pHTitle->addWidget(Btn_mpClose);
Layout_pHTitle->setContentsMargins(5, 5, 5, 5);
connect(Btn_mpSet, &QPushButton::clicked, this, &CTitleBar::onClicked);
connect(Btn_mpMin, &QPushButton::clicked, this, &CTitleBar::onClicked);
connect(Btn_mpMax, &QPushButton::clicked, this, &CTitleBar::onClicked);
connect(Btn_mpClose, &QPushButton::clicked, this, &CTitleBar::onClicked);
}
void CTitleBar::mousePressEvent(QMouseEvent* event) {
//实现窗口可拖拽
if (ReleaseCapture()) {
QWidget* pWindow = this->window();
if (pWindow->isTopLevel()) {
SendMessage(HWND(pWindow->winId()), WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
}
}
}
void CTitleBar::mouseDoubleClickEvent(QMouseEvent* event) {
Btn_mpMax->click();
}
void CTitleBar::onClicked() {
QPushButton* btn_ptemp = qobject_cast<QPushButton*>(sender());
QWidget* widget_window = this->window();
if (btn_ptemp == Btn_mpMin) {
widget_window->showMinimized();
} else if (btn_ptemp == Btn_mpMax) {
if (widget_window->isMaximized()) {
widget_window->showNormal();
} else {
widget_window->showMaximized();
}
} else if (btn_ptemp == Btn_mpClose) {
emit sig_close();
}
}
图片自适应控件
Label_mpLogo->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/title_icon.png);");
Btn_mpSet->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/set.svg);");
Btn_mpMin->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/min.svg);");
Btn_mpMax->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/normal.svg);");
Btn_mpClose->setStyleSheet("border-image:url(:/MainWidget/resources/titlebar/close.svg);");
使用border-image
:这个属性可以让你设置控件的边框图像,并且可以在控件大小变化时保持图像的比例和位置。
信号槽连接
connect(Btn_mpSet, &QPushButton::clicked, this, &CTitleBar::onClicked);
connect(Btn_mpMin, &QPushButton::clicked, this, &CTitleBar::onClicked);
connect(Btn_mpMax, &QPushButton::clicked, this, &CTitleBar::onClicked);
connect(Btn_mpClose, &QPushButton::clicked, this, &CTitleBar::onClicked);
这四个按钮的点击信号全部链接相同的函数.在这一个函数中我们需要怎样区分信号的来源?
区分信号来源
void CTitleBar::onClicked() {
QPushButton* btn_ptemp = qobject_cast<QPushButton*>(sender());
QWidget* widget_window = this->window();
if (btn_ptemp == Btn_mpMin) {
widget_window->showMinimized();
} else if (btn_ptemp == Btn_mpMax) {
if (widget_window->isMaximized()) {
widget_window->showNormal();
} else {
widget_window->showMaximized();
}
} else if (btn_ptemp == Btn_mpClose) {
emit sig_close();
}
}
函数结构
void CTitleBar::onClicked() {
QPushButton* btn_ptemp = qobject_cast<QPushButton*>(sender());
-
void CTitleBar::onClicked()
:这是CTitleBar
类中的槽函数,处理按钮点击事件。 -
QPushButton* btn_ptemp = qobject_cast<QPushButton*>(sender());
:使用sender()
获取发送信号的对象,并尝试将其转换为QPushButton*
类型。qobject_cast
安全地进行类型转换,如果转换失败,则返回nullptr
。
获取窗口
QWidget* widget_window = this->window();
-
QWidget* widget_window = this->window();
:获取当前标题栏所属的窗口(父窗口)指针。
按钮点击处理
if (btn_ptemp == Btn_mpMin) {
widget_window->showMinimized();
} else if (btn_ptemp == Btn_mpMax) {
if (widget_window->isMaximized()) {
widget_window->showNormal();
} else {
widget_window->showMaximized();
}
} else if (btn_ptemp == Btn_mpClose) {
emit sig_close();
}
-
最小化按钮:
-
if (btn_ptemp == Btn_mpMin)
:检查点击的按钮是否是最小化按钮。 -
widget_window->showMinimized();
:调用窗口的showMinimized()
方法,将窗口最小化。
-
-
最大化按钮:
-
else if (btn_ptemp == Btn_mpMax)
:检查是否是最大化按钮。 -
if (widget_window->isMaximized())
:判断窗口是否已经最大化。-
widget_window->showNormal();
:如果是最大化,则恢复窗口到正常状态。 -
widget_window->showMaximized();
:如果不是,则将窗口最大化。
-
-
-
关闭按钮:
-
else if (btn_ptemp == Btn_mpClose)
:检查是否是关闭按钮。 -
emit sig_close();
:发出sig_close
信号,通常用于通知其他部分关闭窗口。
-
MainWidget.cpp
#include "MainWidget.h"
#include "QVBoxLayout"
#include <qt_windows.h>
#include <windows.h>
#include <windowsx.h>
#include <QMessageBox>
#pragma comment(lib, "user32.lib")
#pragma comment(lib,"dwmapi.lib")
MainWidget::MainWidget(QWidget* parent)
: CFrameLessWidgetBase(parent) {
//this->setWindowFlags(Qt::FramelessWindowHint |Qt::WindowMinMaxButtonsHint );
this->setWindowFlags(Qt::FramelessWindowHint);
initUI();
}
MainWidget::~MainWidget() {}
void MainWidget::initUI() {
CTitleBar_mp = new CTitleBar(this);
QWidget* Widget_Main = new QWidget(this);
Widget_Main->setMinimumSize(600, 400);
QVBoxLayout* Layout_pVMain = new QVBoxLayout(this);
Layout_pVMain->addWidget(CTitleBar_mp);
Layout_pVMain->addWidget(Widget_Main);
Layout_pVMain->setContentsMargins(0, 0, 0, 0);
setLayout(Layout_pVMain);
connect(CTitleBar_mp, &CTitleBar::sig_close, this, &MainWidget::on_closeSlot);
}
void MainWidget::on_closeSlot() {
close();
}