Making some simple help for my application

[Godlike]

How can i make some little help when i click on a help button.
Something like this here:

http://img81.imageshack.us/my.php?image=untitled3sj.jpg

Is there some example how i can make this window here ?

Thx.

[wysota]

Either use "What's this" capabilities or look at the simple help browser video (http://www.trolltech.com/video/index.html).

[Godlike]

Ok used the video, all fine. But i cant get that include right: ui_browser.h

When i compile it doesnt find it. It must be in the directory where i compile probably, so where can i get that file ?

[wysota]

It should get created by uic from your ui file. Make sure the ui file you created in Designer is mentioned in the FORMS section of the project file.

[Godlike]

I made that form in the QT designer 4.0 and then when i was done i saved it as form.ui and that is all i have in my directory. So where should i check that what you said ?

[wysota]

The .pro file should contain an entry in its FORMS section about that designer made file. If it doesn't have it, you should add FORMS+=filename.ui and rerun qmake.

[Godlike]

It contains it.

FORMS += form.ui

it was there from beggining.

ahhh its ui_form.h not same as by the example because i changed name :)
Stupid me :o

Stil cant integrate it to my application :(

I have it like this:

main.cpp



int main(int argc, char *argv[])
{
QApplication app(argc, argv);
ImageViewer imageViewer;
imageViewer.show();
return app.exec();
}


imageviewer.h



class QMainWindow;


imageviewer.cpp



ImageViewer::ImageViewer()
{
QMainWindow *form = new QMainWindow;
Ui::MainWindow ui;
ui.setupUi(form);
ui.textBrowser->setSource(QString("/home/godlike/RA/test/index.html"));
}

void ImageViewer::createActions()
{
helpAct = new QAction(tr("&Help"), this);
helpAct->setShortcut(tr("Ctrl+H"));
connect(helpAct, SIGNAL(triggered()), this, SLOT(help()));
}

void ImageViewer::help()
{
statusBar()->showMessage(tr("Help"));
form->show();
}


I only pasted relevant code for this problem. I will paste the error i get from compile:

imageviewer.cpp:26: error: ‘MainWindow’ is not a member of ‘Ui’
imageviewer.cpp:26: error: expected `;' before ‘ui’
imageviewer.cpp:27: error: ‘ui’ was not declared in this scope

Something with that Ui but i dont know what i did wrong with it.
Thx for help so far, help abit more and i will learn something new again :D

[jacek]

Ui::MainWindow ui;
This should be a member variable of the ImageViewer class.

Make sure that you have #include "ui_something.h" and that your form is named MainWindow (check objectName property in the Designer).

[Godlike]

Yep moved to .h file and corrected the name. Compiles great now. But if i click my button help, signal connects to function help(), its posted one post above, i get segmentation fault and my app crashes :eek:

Anything i made wrong, again ? :crying:

Though it had to do something that i used QMainWindow so i made it as QWidget, still same problem, but if i move my form->show(); out of help() to the top where i do ui.setup ... it goes fine, but it starts when program starts, i want it to show when i click on help, so how can this be done correctly ?

Argh, got it. Why would i make that widget before calling help() thats stupid :p

I just made it when i called help(), works fine. Sorry for asking too soon.

Thanks for all the help. Great forum!

[jacek]

ImageViewer::ImageViewer()
{
QMainWindow *form = new QMainWindow;
...
}
You have two form variables --- one is a member variable in of the ImageViewer and another one is a local variable that you use in the constructor. There should be only one.

BTW. It would be better if you create a separate class for that help browser.