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Forum: Newbie

Newbie to Qt? Ask your questions here.

  1. setPixmap and Paint Event

    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 =...

    Posted By Magu
    • Replies: 7
    • Views: 48
    Today 11:32 Go to last post
  2. tablewidget text colour

    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. ...

    Posted By hollowhead
    • Replies: 0
    • Views: 9
    Today 11:05 Go to last post
  3. Change the value of a form's widget from other form.

    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...

    Posted By iosebaere
    • Replies: 4
    • Views: 59
    Today 10:09 Go to last post
  4. Exclamation A little calculator problem

    OK so I started to make a calculator program and was compiling while I was coding (that's why the code isn't complete), and it gave me these errors....

    Posted By bijan311
    2 Pages
    1 2
    • Replies: 29
    • Views: 290
    Today 08:08 Go to last post
  5. Download Page Source of Website

    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...

    Posted By AjRomano
    • Replies: 3
    • Views: 37
    Today 07:22 Go to last post
  6. Automatic resizing of child widgets

    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....

    Posted By JovianGhost
    • Replies: 2
    • Views: 15
    Today 07:04 Go to last post
  7. QListWidget size

    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...

    Posted By dubstar_04
    • Replies: 7
    • Views: 92
    Today 05:49 Go to last post
  8. repaint widget

    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...

    Posted By yxtx1984
    • Replies: 4
    • Views: 48
    Today 04:51 Go to last post
  9. complete tablewidget

    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...

    Posted By tux-world
    • Replies: 3
    • Views: 34
    Today 03:07 Go to last post
  10. QToolbar

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

    Posted By swrer
    • Replies: 1
    • Views: 24
    Today 01:08 Go to last post
  11. QImage and Qt 4.5.3

    Hi; I developped an application drawing images using QPainter. First on OpenSUSE 11.0 with Qt 4.4.0, and it WORKS and print pictures, but have...

    Posted By halmassi
    2 Pages
    1 2
    • Replies: 26
    • Views: 161
    Yesterday 22:49 Go to last post
  12. Can I create a release version of my app from QtCreator?

    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...

    Posted By feraudyh
    • Replies: 1
    • Views: 30
    Yesterday 22:14 Go to last post
  13. How to work around QRegExp dot-matches-newline?

    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 "\".\""...

    Posted By dave
    qregexp regex
    • Replies: 1
    • Views: 20
    Yesterday 19:19 Go to last post
  14. 2D OpenGL text rendering with existing app

    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...

    Posted By bytebucket
    • Replies: 6
    • Views: 45
    Yesterday 18:04 Go to last post
  15. Conect and do select in a database mysql

    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...

    Posted By mmm286
    • Replies: 1
    • Views: 16
    Yesterday 17:21 Go to last post
  16. Keyboard combination of ctrl+shift+alt not supported?

    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)...

    Posted By christer
    • Replies: 5
    • Views: 82
    Yesterday 16:50 Go to last post
  17. Question Signal/slot or direct method call within a class

    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...

    Posted By mike_the_tv
    • Replies: 3
    • Views: 54
    Yesterday 16:33 Go to last post
  18. Problem with design interface

    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...

    Posted By tux-world
    • Replies: 5
    • Views: 47
    Yesterday 15:19 Go to last post
  19. Problem with reffering to images (and another data files)

    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...

    Posted By kremuwa
    • Replies: 11
    • Views: 117
    Yesterday 13:56 Go to last post
  20. Question Capturing VIDEO from USB Camera

    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...

    Posted By Rajeshsan
    • Replies: 6
    • Views: 75
    Yesterday 11:23 Go to last post
  21. How can I create a vcproj file with specific subfolders with QMake

    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...

    Posted By murrekatt
    • Replies: 1
    • Views: 33
    Yesterday 11:12 Go to last post
  22. delete QWidget

    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...

    Posted By yxtx1984
    • Replies: 1
    • Views: 39
    Yesterday 05:17 Go to last post
  23. Question [HELP] window won't show after build

    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...

    Posted By jsmi
    • Replies: 3
    • Views: 60
    9th March 2010 23:17 Go to last post
  24. versioning window exe in QT4.6?

    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...

    Posted By marct
    • Replies: 1
    • Views: 32
    9th March 2010 22:23 Go to last post
  25. problem connect signal - slot

    Hi! I'm trying to connect two QGroupBox. If the groupbox1 checked or clicked the other groupBox2 be disabled or enabled (setEnabled (false) or...

    Posted By jaca
    • Replies: 13
    • Views: 165
    9th March 2010 20:38 Go to last post
  26. Dirty QDialog

    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...

    Posted By SElsner
    • Replies: 4
    • Views: 116
    9th March 2010 20:27 Go to last post
  27. Send a mouse right click into QGRaphicsScene

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

    Posted By jano_alex_es
    • Replies: 1
    • Views: 27
    9th March 2010 18:09 Go to last post
  28. 'private slots: ' what kind of syntax is that?

    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...

    Posted By wgan
    • Replies: 2
    • Views: 87
    9th March 2010 13:48 Go to last post
  29. Question customising the qfledialog box in qt4.5.2

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

    Posted By netfanatic
    • Replies: 4
    • Views: 56
    9th March 2010 11:06 Go to last post
  30. Question Printing a ListWidget

    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...

    Posted By viciv919
    • Replies: 3
    • Views: 63
    9th March 2010 10:47 Go to last post

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