How can I re-size the graphicviewitem using mouse
How can I change the QGraphicView Item size using mouse.In this tutorial have that function to change the size using mouse,but I'm not understand that.Can you explain how resize the rectangle size using mouse.this code generate the 2 rectangles,how can I change the sizes of those rectangles.I also have a question how line item create,resize,move and rotate in this tutorial .
#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); scene = new QGraphicsScene(); ui->graphicsView->setScene(scene); scene->setSceneRect(0,0,400,400); // Create the first red rectangle on the graphic scene QGraphicsRectItem *rect1 = new QGraphicsRectItem(); rect1->setRect(10,50,100,50); rect1->setBrush(QBrush(Qt::red)); rect1->setPen(QPen(QBrush(Qt::black),2)); scene->addItem(rect1); // And create a second blue rectangle on the graphic scene QGraphicsRectItem *rect2 = new QGraphicsRectItem(); rect2->setRect(150,100,115,75); rect2->setBrush(QBrush(Qt::blue)); rect2->setPen(QPen(QBrush(Qt::black),2)); scene->addItem(rect2); }
We recommend hosting TIMEWEB
Stable hosting, on which the social network EVILEG is located. For projects on Django we recommend VDS hosting.Do you like it? Share on social networks!
AD
- Akiv Doros
- Nov. 11, 2024, 2:58 p.m.
C ++ - Test 004. Pointers, Arrays and Loops
- Result:50points,
- Rating points-4
m
- molni99
- Oct. 26, 2024, 1:37 a.m.
C ++ - Test 004. Pointers, Arrays and Loops
- Result:80points,
- Rating points4
m
- molni99
- Oct. 26, 2024, 1:29 a.m.
C ++ - Test 004. Pointers, Arrays and Loops
- Result:20points,
- Rating points-10
Last comments
Circuit switching and packet data transmission networks Angioedema 1 priligy dapoxetine
How to Copy Files in Linux If only females relatives with DZ offspring were considered these percentages were 23 order priligy online uk
Qt/C++ - Tutorial 068. Hello World using the CMAKE build system in CLion ditropan pristiq dosing With the Yankees leading, 4 3, Rivera jogged in from the bullpen to a standing ovation as he prepared for his final appearance in Chicago buy priligy pakistan
EVILEG-CORE. Using Google reCAPTCHA 2001; 98 29 34 priligy buy
PyQt5 - Lesson 007. Works with QML QtQuick (Signals and slots) priligy 30mg Am J Obstet Gynecol 171 1488 505
Now discuss on the forum
добавить qlineseries в функции priligy amazon canada 93 GREB1 protein GREB1 AB011147 6
Всё ещё разбираюсь с кешем. priligy walgreens levitra dulcolax carbs The third ring was found to be made up of ultra relativistic electrons, which are also present in both the outer and inner rings
IscanderCheOct. 31, 2024, 3:43 p.m.
Машина тьюринга // Начальное состояние 0 0, ,<,1 // Переход в состояние 1 при пустом символе 0,0,>,0 // Остаемся в состоянии 0, двигаясь вправо при встрече 0 0,1,>…
ИМ
Реализация навигации по разделам Спасибо Евгений!
Игорь МаксимовOct. 3, 2024, 4:05 a.m.
First, You need inherit from QGraphicsRectItem and override methods mousePressEvent(), mouseMoveEvent(), mouseReleaseEvent().
After that, you can make field in QGraphicsItem for resizing.
sir,can you explain how this this line item generate when button click and,how rotate,move and resize it using mouse.which classes are related to line functions. I create and re-size the rectangles in this way(I uploaded my sample project here) , now I need to generate line Item when button click and,need to resize,move and rotate like your tutorial.please check my sample project and if you can please edit and give me a solution please.
For Line You need create another class which will be inherited from QGraphicsPathItem. And I think, You should use special enum for types of Line or Rectangle.
When You work with some item, You need to store pointer to this Item, now You use rect.