I work with visual studio,before; when will write code in form_load event, must be double click in form and then write the code, Eevoudig So.
Now. I want write the code in form load in Qt,C++.
How and Where must write it?
Thank You,.
There is no form loading event. In C++ Qt projects, you should write your initialization code in the constructor of your form.
I figured out how to do it.
enter image description here
Writing the code in the red part is the solution to the problem.
The first part of the program that runs is the same.
Thank you. Good Bye.
Related
This is my first forum post here. I'm new to c++ (been using MATLAB for years) and I am using visual studio's UWP template, creating the gui in the designer view, and trying to get inputs to do things in the background (I'm trying to make it matlab I guess lol). Every time I try to do this, it tella me that my inputs (input1->Text for example) are strings not double and I don't know how to get numeric inputs. New to this and very confused. Any guidance would be greatly appreciated :)
Thanks!
Brett
Since it is not clear you need C++/WinRT or C++/CX,I give the code for C++/CX by default.You can try the code below.
String^ text = MyTextBox->Text;
std::wstring ws1(text->Data());
double num = std::stod(ws1);
Okay,
I have this slightly annoying problem with the code assistance of Eclipse CDT.
Whenever you hover the mouse over a function, a window pops up to show you the comment of that function. That is good.
Now, unfortunately, when the source file for that function is also available, it shows that instead of the comment. But I really don't want to see the source of the function, I always want to see the comment in the header. Who thought it would be a good idea to show source code when you just want a short description of what a function does? Not especially well suited for C++, is it? ;)
And another issue:
This window that pops up when you hover with mouse over a function... I really don't want to hover my mouse everytime I want to have that window.
I think the solution to my problems would be if there was a way to always show the header comment of a function as soon as the text cursor is on that function. Maybe in a permanent window that I can place wherever I want. Is there a way to achieve this? Maybe a plugin?
And if there is no way to do that: What is the shortcut for opening that window and how can I force it to show the header comment instead of the source code?
From this thread, it looks like the hover issue is intentional design. It probably results from eclipse originally being a Java IDE (where function definition equals declaration in source code).
The only workaround seems to be to exclude the source code by compiling it away into a *.lib without debug information and including it via lib and headers. Which is kind of impossible when your project is the one that generates the library in the first place.
What you could do is to make Documentation in the sense of the property page avaliable. That seems somewhat complicated from what I found in the eclipse forums:
The 'Documentation Hover' type listed in the preference page only
displays help content which has been contributed to the
org.eclipse.cdt.ui.CHelpProvider extension point.
I am new to c++ and even newer to Qt on Linux.
Can any one give me a general idea of how to display text in a textbrowser in Qt? I can't post my code because of the seative nature of the project I am working on. All I need is a basic understanding of how to do this related to slots and signals.
My application is this: I am taking input from a CSV file, counting the ords and then displaying the number of counted words along with the line of text in an output window.
It works fine in console c++ program. However, when I code it in Qt, it does not work.
Any advise or help would be welcome.
sorry for the bad question I asked earlier.
It turns out it was a configuration issue on my part.
I want to make a GUI . I have a code that runs, made in C++. The project is made in Visual Studio(Visual C++ 2010 Express).
The outputs now are printed in command line. I want to tranform this to be printed to a window.
Is there a way to do this in this already made project ? Or I have to make a new one.
P.S. The code is consists of many, about 20 .cpp files and about 5 .h headers.
Following my comment on your original post here's some more information that will help you get through this:
Simply turn your "cout << ...." calls (or printf if the code is
actually C) to append the text to the UI control you want the output
to be displayed in? Or you can check this "hack" out:
cplusplus.com/forum/general/27876
Now simply add a new source file to the project: call it.. MyProjectGUI.cpp
Follow this guide here to setup the window on your project:
http://msdn.microsoft.com/en-us/library/bb384843.aspx
Then go through the rest of your code (or use the hack mentioned above or some kind of pipe to redirect your output (probably a lot! more complicated than the following method) and simply replace your cout << / printf calls with something like what's detailed in here: http://www.programmersheaven.com/mb/windows/105327/105327/appending-text-to-edit-control/
You'll find the basic idea of your modifications to be along these lines:
Create a simple window
Add a new edit field to the window (http://en.wikibooks.org/wiki/Windows_Programming/User_Interface_Controls and http://msdn.microsoft.com/en-us/library/windows/desktop/ms632680(v=vs.85).aspx)
Replace all console printing calls with a call to your append function for the edit box in the GUI
Best of luck with this (I might write up some code if I'm bothered but don't count on it -> no time. You should be able to figure it out with what I've posted though)
You dont have to do another project. It is enough to include headers and add libraries to linker. You should try a QT which is portable, well written and easy to learn. My one advice is to stay as portable as possible, in example you can create a makefile for your project so add new libraries will be a quiet easy job and not related to IDE . Dont stick to one environment.
I am working with QT Creator. I have a form that contains a push button and an Line Edit. I would like to print a string that i give programatically in this LineEdit.Secondly I would also like to the from the LineBox a string that I fill in and print it using QMessageBox.
How to do it? Need some help. I don't know how to access the displayText() to write and read from a LineEdit.
I would like to specify that I put the push button and the lineedit on the Form using drag and drop.
I am working in c++ under Ubuntu
Appreciate.
You use QLineEdit::setText() to change the text and QLineEdit::text() to read.
Your questions are very basic and show a clear lack of studying the documentation and experimenting thing yourself. Qt is one of the better documented frameworks out there and with lots of examples. Please take your time to go through them.