Forum: Newbie

Hi all, I´m trying to do some simple Qt experiments... like load and manipulate pixmaps. Why this piece of code does not work? image =...

I'm trying to set the text colour for selected text in a spreadsheet (tablewidget). I've tried several different methods but none of them compile. ...

I need to change the value of a lineEdit text from other form. I now that is a stupid question, I have searched through the forum but didn't found...

Hello. I took a class last semester that used Qt and have wanted to explore and continue to use it. I had an idea for a program that I would like...

Hi all, First time poster here. Decided to give Qt a shot, after getting fed up with wxWidgets' absolutely horrid GUI designer and clunky macros....

I have tried finding the answer to this and as a last resort i am posting here to see if any one can help. I have a QLlstWidget to which I add 4...

What happened when call repaint()? I think it will jump to paintEvent immediately, is it right? if not, how to force the widget repaint itself...

I create an object with tableWidget have. I take information from the database and the inside of the display. Also able to create the new column. How...

I can't change the size of a button in qtoolbar ... QPushButton e1PushButton = new QPushButton(this); e1PushButton .resize(20, 20);...

Like so many aspects of QtCreator this does not seem to be documented. One funny aspect of QtCreator is that there is in the Compile Menu an item...

I'm trying to create a regular expression which will find every occurrence of a sentence enclosed in "" on a single line. I have tried this "\".\""...

I have an existing C++ MFC app which renders to a 3D OpenGL view. I'd like to use Qt to render 2D text over the 3D scene. I found the below...

Hi, I must to do some select in a database MySQL with qt. Could you say how could I do connect with the database and execute select? Many...

I'm running PC-BSD 8.0 operating system at work which use KDE 4.3.5 and thus Qt. I have an application (developed in java, but not Qt related)...

I am starting out with Qt and think I have grasped the basic concepts such as signals and slots for conveying events such as button clicks from the...

I designed this form. The second column I wrote the words that I am not able to do a great location to place it occurs Full text Text column two is...

My Qt app folder looks like this: - bin - data In 'bin' there is the .exe file, and in 'data' there is a folder called 'icons' and there are a...

HI to all....... I need to interface USB Camera in Qt Code to Display captured video from USB Camera on Q MainWindow.How to get video...

Hi all! I'm trying to figure out how to write a .pro file that I can use to generate a vcproj file (VS2003) that would reflect the file structure...

As we know a widget is will be delete when the parent is delete, but if i just want to delete itself without release the parent, how to do this? Is...

Hello! I'm completely new to Qt and have been checking it out for couple days for now. I've tried to run this simple...

Hi, I just found out that one way to add some info/summary to a window exe app would be to use some .rc file to be added. This is for VS but how...

Hey, how do I determine whether a Dialog is dirty (i.e. the values of the widgets were changed)? I could install an event filter but that fires...

Hi, how can I perform a mouse press button by code into a QGraphicsView/QGraphicsScene? I tried to create a QMouseEvent and execute a...

ok i'm a newbie, i just can't quite figure out what kind of syntax qt uses on this one? i dont recall it's part of standard c++ grammar and it...

hi everyone , i am trying to customize the qfiledialog box due to the following reason : 1. i am expexcting the following functionality from...

Hi I'm new to QT, so be patient with me! I want to print what is currently shown in a ListWidget but I have no idea how to do it. Hope someone...