Posts by Yuri Pires • 579 points
20 posts
-
1
votes1
answer694
viewsQ: Identify memory leak in c++?
Hello, I have recently had problems with the application I am developing. The application seems to lose performance during a certain run time. I checked my code but use only a single object…
-
3
votes2
answers425
viewsQ: Use delete on allocated objects without new?
Hello, from always until today in my c++ projects with Qt, I have always used delete objects only when I dynamically allocate them with the operator new, But in my last project that was relatively…
-
1
votes2
answers1220
viewsQ: Aspect ratio of an image resized with Opencv?
I have a project where I need to identify objects in an image, currently using the Opencv library in C++. I used the function warpPerspective() Opencv on a 605x141 size image to resize your…
-
2
votes1
answer1039
viewsQ: C++ - Convert Mat to Opencv integer array?
I’m doing an image manipulation project using the Opencv. I need to analyze the values of pixels of a "binarized" image, for this I am trying to convert my Mat file image to a array of integers,…
-
6
votes1
answer1949
viewsQ: What is the difference between Debug and Release?
I started having the error: "Microsoft C++ Runtime error library". And I got many problems trying to fix this error. I was using Qt Creator with mingw32 in mode debug, but I realized that this mode…
-
1
votes1
answer563
viewsA: c++ - How to return a value to a previous window in Qt?
My problem was simple resolution. I added the line tamVeic->exec(); after the call from tamVeic->show();, which allowed the value to be returned to the main window. I also had to change the…
-
2
votes1
answer563
viewsQ: c++ - How to return a value to a previous window in Qt?
Hello, I am developing a project where I will have many calls from new windows and need to recover a value from these windows to the main window (Mainwindow). The problem is that it becomes…
-
1
votes1
answer654
viewsA: c++ - How to pass parameters between Windows in Qt?
Well, after hours and hours of cracking my head on what would be causing the application crash, I discovered that the problem was with the ui->setupUi(this) line; where I had accidentally deleted…
-
0
votes1
answer654
viewsQ: c++ - How to pass parameters between Windows in Qt?
Hi, I’m trying to pass a mat parameter from one window to another, being activated by the click of a button. The program compiles and runs normally, but when clicking the button that activates the…
-
1
votes1
answer3995
viewsQ: Mysql server with Xampp to be accessed by another machine?
I am a complete beginner in dealing with Web programming and local and remote servers, my notion on these subjects is quite partial. Well, I have a system that will need access to a Mysql database.…
-
0
votes2
answers828
viewsA: How to connect a Mysql database with QT on a local network?
Well, after breaking my head with some research I found out where the problem comes from, but not necessarily the complete solution. I was using oracle’s Mysql 5.7. I decided to test the connection…
-
2
votes2
answers828
viewsQ: How to connect a Mysql database with QT on a local network?
Hello, at the moment I am Noob in manipulation of servers with databases. I am using Qt Creator 5.3 to develop my project, and have decided to incorporate a Mysql 5.7 database into it. I am trying…
-
4
votes1
answer560
viewsQ: C++ - Sort particular points of a rectangle in a vector?
I have a project in c++ where I should map regions of an image using the mouse click. The point is that I should get the mapping points in a specific storage order, as in the image below: my problem…
-
3
votes1
answer246
viewsQ: QT - Identify coordinates of an image in a different size Qlabel?
Hello, I recently had a question about how to track coordinates of a Qlabel using the mouse cursor. It worked fine for what I was thinking of doing. What I intend to do is the following, I have an…
-
3
votes1
answer185
viewsQ: How to track mouse coordinates on a Qlabel?
Hello, I’m with a screen project using Qt Creator and I’m stuck with the following problem: I want to track the mouse coordinates by moving the cursor over a Qlabel. I saw in some other topics some…
-
1
votes1
answer82
viewsQ: QT - View Webcam on a Qlabel using another Thread?
Hello, I’m doing a C++ project using QT GUI. In the project in question I need to display images of a camera in the window, but in doing so, the performance of the window is very compromised, all…
-
3
votes2
answers5730
viewsQ: Problem with Latex Figures Skipping Paragraphs
Hello, a little more than a month ago I started using Latex to write my tcc, from a few days ago I started to insert figures and everything was going well, until suddenly when inserting more…
latexasked Yuri Pires 579 -
1
votes0
answers1248
viewsQ: How to capture webcam images in Opencv in Java?
Hello, I’m a beginner in opencv with java, and my problem is this, I want to capture the real-time image of my webcam and stream it on a Jlabel, but I’m having a problem running the file, netbeans…
-
7
votes1
answer522
viewsQ: Reflection in Opengl in C?
Hi, I’m with a college computer graphics project and I need help. I’m trying to create a rectangle that works like a mirror, for the objects of my scene in Opengl in C. I found some tutorials that…
openglasked Yuri Pires 579 -
3
votes1
answer14854
viewsQ: How to make POST with parameters in Webservice REST in java?
Hello, I have a problem that I haven’t been able to solve for days. The situation is as follows, until today I only managed to use the GET method of my webservice by passing parameters directly to…