1 开发测试环境

IDE：VS2017

Qt：5.14.2 x64

操作系统：Win10、Win11

实现效果：

2 实现

网上搜索Qt窗口的无边框化实现方案有很多，但从实现的难易程度，以及效果上来说，最优

的还是通过Windows消息来实现，即重新实现Qt窗口的nativeEvent方法。该方案不仅实现了无边

框窗口，还保留了窗口的拖动、贴边等系统特性，以下为实现代码（以QWidget为例，

QMainWindow、QDialog可以平移过去）：

#include "ui/frameless_widget.h"#include <windows.h>
#include <windowsx.h>#pragma comment (lib,"user32.lib")FramelessWidget::FramelessWidget(QWidget *parent) : QWidget(parent)
, movale_(true)
, resizable_(true)
, border_width_(5)
, title_bar_(Q_NULLPTR)
, just_maximized_(false)
{this->setWindowFlags(this->windowFlags() | Qt::FramelessWindowHint | Qt::WindowSystemMenuHint | Qt::WindowMinimizeButtonHint);this->installEventFilter(this);HWND hwnd = (HWND)this->winId();DWORD style = ::GetWindowLong(hwnd, GWL_STYLE);::SetWindowLong(hwnd, GWL_STYLE, style | WS_MAXIMIZEBOX | WS_THICKFRAME | WS_CAPTION);
}FramelessWidget::~FramelessWidget()
{
}void FramelessWidget::setTitleBar(QWidget *title_bar)
{title_bar_ = title_bar;title_bar_->installEventFilter(this);
}void FramelessWidget::showEvent(QShowEvent *event)
{this->setAttribute(Qt::WA_Mapped);QWidget::showEvent(event);
}bool FramelessWidget::eventFilter(QObject *watched, QEvent *event)
{if (watched == this){if (event->type() == QEvent::WindowStateChange){if (this->windowState() == Qt::WindowNoState){movale_ = true;resizable_ = true;}else{movale_ = false;resizable_ = false;}emit signalWindowStateChanged(!movale_);}}return QWidget::eventFilter(watched, event);
}bool FramelessWidget::nativeEvent(const QByteArray &event_type, void *message, long *result)
{MSG *msg = (MSG *)message;switch (msg->message){case WM_NCCALCSIZE:{//this kills the window frame and title bar we added with WS_THICKFRAME and WS_CAPTION*result = 0;return true;}case WM_NCHITTEST:{*result = 0;const LONG border_width = border_width_;RECT winrect;GetWindowRect(HWND(winId()), &winrect);long x = GET_X_LPARAM(msg->lParam);long y = GET_Y_LPARAM(msg->lParam);bool resize_width = minimumWidth() != maximumWidth();bool resize_height = minimumHeight() != maximumHeight();if (resize_width){//left borderif (x >= winrect.left && x < winrect.left + border_width){*result = HTLEFT;}//right borderif (x < winrect.right && x >= winrect.right - border_width){*result = HTRIGHT;}}if (resize_height){//bottom borderif (y < winrect.bottom && y >= winrect.bottom - border_width){*result = HTBOTTOM;}//top borderif (y >= winrect.top && y < winrect.top + border_width){*result = HTTOP;}}if (resize_width && resize_height){//bottom left cornerif (x >= winrect.left && x < winrect.left + border_width &&y < winrect.bottom && y >= winrect.bottom - border_width){*result = HTBOTTOMLEFT;}//bottom right cornerif (x < winrect.right && x >= winrect.right - border_width &&y < winrect.bottom && y >= winrect.bottom - border_width){*result = HTBOTTOMRIGHT;}//top left cornerif (x >= winrect.left && x < winrect.left + border_width &&y >= winrect.top && y < winrect.top + border_width){*result = HTTOPLEFT;}//top right cornerif (x < winrect.right && x >= winrect.right - border_width &&y >= winrect.top && y < winrect.top + border_width){*result = HTTOPRIGHT;}}//*result still equals 0, that means the cursor locate OUTSIDE the frame area//but it may locate in titlebar areaif (*result == 0){if (!title_bar_) return false;QPoint pos = title_bar_->mapFromGlobal(QPoint(x, y));if (!title_bar_->rect().contains(pos)) return false;QWidget* child = title_bar_->childAt(pos);if (!child){*result = HTCAPTION;return true;}else {/*if (_lpWhiteList.contains(child)){*result = HTCAPTION;return true;}*/return false;}}return true;} //end case WM_NCHITTESTcase WM_GETMINMAXINFO:{if (::IsZoomed(msg->hwnd)) {RECT frame = { 0, 0, 0, 0 };AdjustWindowRectEx(&frame, WS_OVERLAPPEDWINDOW, FALSE, 0);//record frame area dataframes_.setLeft(abs(frame.left));frames_.setTop(abs(frame.bottom));frames_.setRight(abs(frame.right));frames_.setBottom(abs(frame.bottom));QWidget::setContentsMargins(frames_.left() + margins_.left(), \frames_.top() + margins_.top(), \frames_.right() + margins_.right(), \frames_.bottom() + margins_.bottom());just_maximized_ = true;}else {if (just_maximized_){QWidget::setContentsMargins(margins_);//after window back to normal size from maximized state//a twinkle will happen, to avoid this twinkle//repaint() is important used just before the window back to normalrepaint();frames_ = QMargins();just_maximized_ = false;}}return false;}default:return QWidget::nativeEvent(event_type, message, result);}
}

3 扩展

以上，已经实现一个无边框窗口，可以拖动边框进行放大、缩小，以及通过点击任务栏标签

进行最小化和还原。如果想进一步实现窗口的拖动以及贴边特性，则需要实现一个窗口标题栏，并

通过setTitleBar进行设置。为了方便扩展，我们提供一个中间适配窗口，继承自

FramelessWidget，实现基础的标题栏，并对外提供设置标题、隐藏最小化、最大化按钮等接口，

当软件有多个无边框窗口需求时，可以继承适配窗口，并通过接口定制标题栏显示内容。

#include "ui/base_widget.h"BaseWidget::BaseWidget(QString title, QWidget *parent) : FramelessWidget(parent)
, layout_(Q_NULLPTR)
, title_bar_(Q_NULLPTR)
, title_bar_layout_(Q_NULLPTR)
, sys_icon_(Q_NULLPTR)
, title_(Q_NULLPTR)
, right_layout1_(Q_NULLPTR)
, right_layout2_(Q_NULLPTR)
, minimize_button_(Q_NULLPTR)
, switch_button_(Q_NULLPTR)
, close_button_(Q_NULLPTR)
, content_widget_(Q_NULLPTR)
, status_bar_(Q_NULLPTR)
, message_(Q_NULLPTR)
{initUI();title_->setText(title);this->setTitleBar(title_bar_);connect(this, &BaseWidget::signalWindowStateChanged, this, &BaseWidget::slotWindowStateChanged);connect(minimize_button_, &QToolButton::clicked, this, &BaseWidget::slotMinimizeButtonClicked);connect(switch_button_, &QToolButton::clicked, this, &BaseWidget::slotMaximizeButtonClicked);connect(close_button_, &QToolButton::clicked, this, &BaseWidget::slotCloseButtonClicked);
}BaseWidget::~BaseWidget()
{
}void BaseWidget::initUI()
{// 0layout_ = new QVBoxLayout;layout_->setContentsMargins(0, 0, 0, 0);layout_->setSpacing(0);// 1title_bar_ = new QWidget(this);title_bar_->setObjectName(QString("objTitleBar"));title_bar_->setFixedHeight(42);title_bar_layout_ = new QHBoxLayout;title_bar_layout_->setContentsMargins(5, 0, 0, 0);title_bar_layout_->setSpacing(0);sys_icon_ = new QLabel(title_bar_);title_ = new QLabel(title_bar_);title_->setObjectName(QString("objTitle"));right_layout1_ = new QVBoxLayout;right_layout1_->setContentsMargins(1, 1, 1, 1);right_layout2_ = new QHBoxLayout;right_layout2_->setContentsMargins(0, 0, 0, 0);right_layout2_->setSpacing(5);minimize_button_ = new QToolButton(title_bar_);minimize_button_->setObjectName(QString("objMinimizeButton32x32"));switch_button_ = new QToolButton(title_bar_);switch_button_->setObjectName(QString("objRestoreButton32x32"));close_button_ = new QToolButton(title_bar_);close_button_->setObjectName(QString("objCloseButton32x32"));right_layout2_->addWidget(minimize_button_);right_layout2_->addWidget(switch_button_);right_layout2_->addWidget(close_button_);right_layout1_->addLayout(right_layout2_);right_layout1_->addStretch();title_bar_layout_->addWidget(sys_icon_);title_bar_layout_->addStretch();title_bar_layout_->addWidget(title_);title_bar_layout_->addStretch();title_bar_layout_->addLayout(right_layout1_);title_bar_->setLayout(title_bar_layout_);content_widget_ = new QWidget(this);content_widget_->setObjectName("objContentWidget");status_bar_ = new QStatusBar(this);message_ = new QLabel(status_bar_);message_->setMinimumSize(message_->sizeHint());message_->setAlignment(Qt::AlignVCenter);status_bar_->addWidget(message_);layout_->addWidget(title_bar_);layout_->addWidget(content_widget_);layout_->addWidget(status_bar_);status_bar_->setMaximumHeight(30);//status_bar_->showMessage(QStringLiteral("123"));this->setLayout(layout_);
}void BaseWidget::slotWindowStateChanged(bool max)
{if (max){switch_button_->setObjectName(QString("objRestoreButton24x24"));switch_button_->setStyle(switch_button_->style());}else{switch_button_->setObjectName(QString("objMaximizeButton24x24"));switch_button_->setStyle(switch_button_->style());}
}void BaseWidget::slotMinimizeButtonClicked()
{this->showMinimized();
}void BaseWidget::slotMaximizeButtonClicked()
{if (this->isMaximized()){this->showNormal();}else{this->showMaximized();}
}void BaseWidget::slotCloseButtonClicked()
{this->close();
}

完整代码

1 自定义无边框窗体相关推荐

01.WPF中制作无边框窗体
[引用:]http://blog.csdn.net/johnsuna/article/details/1893319 众所周知,在WinForm中,如果要制作一个无边框窗体,可以将窗体的FormBor ...
拖动无边框窗体(VB6代码)
简单代码片段,记录一下备用. Option Explicit Dim mX As Long, mY As Long Private Sub Form_MouseDown(Button As Integ ...
Qt无边框窗体（Windows）
Qt无边框窗体Windows篇去掉标题栏和边框实现拖拽功能还原窗体功能注意点我们可以做的更好添加阴影亚克力面板效果结语去掉标题栏和边框首先第一步我们要通过设置系统绘制的边框消失 s ...
无边框窗体和用户控件以及权限
无边框窗体: 就是吧窗体的边框去掉,然后自己做按钮设置功能. 无边框窗体的移动: 将下面代码直接复制粘贴,将窗体的鼠标按下事件的方法改成下面方法的名字就可以直接使用 1 //窗体移动API 2 [Dl ...
再谈无边框窗体的操作
本文介绍操作无边框窗体的其他几个方面的技巧. 设置浮动菜单通常情况下,在无边框窗体中不能设置菜单.如果在无边框窗体中设置了菜单,运行时窗体上就会出现标题栏.那么,是否在无边框窗体中就不能使用菜单了呢 ...
无边框窗体移动的方法
文章目录 1 无边框窗体移动的方法 1.1 无边框窗体移动的方法 1 无边框窗体移动的方法 1.1 无边框窗体移动的方法当我们把窗体设置为无边框后,会发现用鼠标拖动窗体时是没有反应的,我们需要在窗体 ...
通过调用API函数实现的无边框窗体的拖拽，比判断坐标更快捷
在winform程序中,有时会选择边框设计会none,但是这样就不能拖拽窗体移动解决方案有二: 1,判断坐标控制拖拽 2.利用API函数, 下面介绍利用API函数,方便,快捷 #region 移动无 ...
【C#】使用DWM实现无边框窗体阴影或全透窗体
1.无边框窗体阴影,win7(需要开启Aero效果)及以上系统 public class LdwmForm : Form{public LdwmForm(){Initialize();}/// < ...
【QT】自定义无边框窗口分享
[QT/天下wu双]自定义无边框窗口分享 https://www.bilibili.com/video/BV1HA411Y7d4 源码链接:https://github.com/Bili-TianX/ ...
C# WinForm 无边框窗体，加阴影、拖动、改变大小等功能完美实现（自认为是完美的 ^=^）
关于Winform的无边框窗体实现,网络上有很多大牛文章,这里不赘述.我也是参考网络上的思路,在使用别人的代码基础上,发现和遇到了很多小问题,所以做了改造,以下做个记录,也是给需要的人提供一点思路,如 ...

1 自定义无边框窗体

1 开发测试环境

2 实现

3 扩展

1 自定义无边框窗体相关推荐

最新文章

热门文章