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Forum: Qt Programming

General more advanced Qt programming issues.

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  1. Qwt

    Questions related to Qwt - Qt widgets for technical applications.

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  1. Read with one thread, send datas to another thread

    Started by suslucoder, 10th January 2021 16:42
    multi thread, read file, threads
    • Replies: 3
    • Views: 3,524
    d_stranz
    11th January 2021, 17:43 Go to last post

  2. add vertical spacer in QGridLayout

    Started by dan1973, 9th January 2021 08:07
    qt5.8
    • Replies: 1
    • Views: 5,571
    ChristianEhrlicher
    9th January 2021, 13:15 Go to last post

  3. display multimedia camera in QT3D

    Started by FCT77, 7th January 2021 02:26
    • Replies: 0
    • Views: 4,533
    FCT77
    7th January 2021, 02:26 Go to last post

  4. How to properly synchronize two threads accessing a QQueue simultaneously

    Started by franco.amato, 4th January 2021 04:09
    • Replies: 1
    • Views: 3,718
    d_stranz
    4th January 2021, 17:10 Go to last post

  5. Find newline character in a QTextEdit / QPlainTextEdit

    Started by Fred, 2nd January 2021 11:02
    • Replies: 4
    • Views: 4,234
    Fred
    3rd January 2021, 19:05 Go to last post

  6. Qt app using oAuth2.0 for authentification

    Started by SteveQt, 24th November 2015 15:48
    • Replies: 2
    • Views: 7,293
    pablodiazgutierrez
    19th December 2020, 01:48 Go to last post

  7. Make Clean not working as in previous version of QTcreator

    Started by emp1953, 14th December 2020 17:13
    make clean, qmake, run time 1 Attachment(s)
    • Replies: 3
    • Views: 5,811
    ChrisW67
    17th December 2020, 08:41 Go to last post

  8. How to implement HCI calls in QtCreator ?

    Started by anneranch, 15th December 2020 16:44
    hci
    • Replies: 2
    • Views: 2,343
    d_stranz
    15th December 2020, 17:19 Go to last post

  9. Question Groups inside QTreeView (using QAbstractItemModel)

    Started by gabo, 8th December 2020 10:55
    group, qabstractitemmodel, qstandarditemmodel, qtcreator, qtreeview 1 Attachment(s)
    • Replies: 4
    • Views: 5,192
    gabo
    14th December 2020, 11:33 Go to last post

  10. Drawing on top of all widgets

    Started by quant, 9th December 2020 10:59
    • Replies: 3
    • Views: 2,807
    quant
    13th December 2020, 11:31 Go to last post

  11. Exclamation [Qt6] StartDrag making crash on Qt6

    Started by Alundra, 11th December 2020 21:22
    • Replies: 6
    • Views: 8,469
    Alundra
    12th December 2020, 22:18 Go to last post

  12. Remove tab in event not thread safe? Having an assert making the app crashing.

    Started by Alundra, 12th December 2020 18:08
    • Replies: 0
    • Views: 3,856
    Alundra
    12th December 2020, 18:08 Go to last post

  13. Question QGraphicsView, change mouse click/move item button (left is default)

    Started by sQaT, 9th December 2020 23:46
    python, qgraphicsscene, qgraphicsview
    • Replies: 2
    • Views: 6,177
    sQaT
    11th December 2020, 09:32 Go to last post

  14. Wrong C++ syntax

    Started by anneranch, 6th December 2020 17:19
    c++
    • Replies: 16
    • Views: 11,554
    d_stranz
    11th December 2020, 04:28 Go to last post

  15. Exclamation QPalette::PlaceholderText in stylesheet?

    Started by Alundra, 11th December 2020 00:41
    • Replies: 0
    • Views: 3,635
    Alundra
    11th December 2020, 00:41 Go to last post

  16. How can I dock widgets between two windows?

    Started by pixaeiro, 8th December 2020 23:23
    3 Attachment(s)
    • Replies: 1
    • Views: 3,271
    d_stranz
    9th December 2020, 01:01 Go to last post

  17. Best way of manage projects

    Started by franco.amato, 7th December 2020 03:06
    • Replies: 1
    • Views: 5,757
    d_stranz
    7th December 2020, 17:01 Go to last post

  18. QtDesigner cross-objects signal / slots - between two dialogs.

    Started by anneranch, 6th December 2020 17:05
    qtdesigner
    • Replies: 1
    • Views: 3,278
    d_stranz
    6th December 2020, 21:11 Go to last post

  19. Qt failing to compile claiming "fatal error: QObject: No such file or directory"

    Started by Momergil, 29th October 2015 16:15
    compilation error, headers not found
    • Replies: 6
    • Views: 15,963
    d_stranz
    6th December 2020, 17:06 Go to last post

  20. Question Custom layout which allows child widgets to be moved and re-positioned

    Started by sQaT, 3rd December 2020 06:03
    button drag drop, layout, python, widget 3 Attachment(s)
    • Replies: 4
    • Views: 5,517
    sQaT
    4th December 2020, 05:00 Go to last post

  21. How to write values to arrays with OPC UA client?

    Started by Ant Asp, 3rd December 2020 08:57
    opc, opcua, qopcuaclient
    • Replies: 0
    • Views: 4,062
    Ant Asp
    3rd December 2020, 08:57 Go to last post

  22. Question QListWidget items swapping

    Started by sbenoitlaf, 20th November 2020 14:16
    qlistwidget, qlistwidgetitems
    • Replies: 2
    • Views: 3,763
    sbenoitlaf
    2nd December 2020, 15:45 Go to last post

  23. Setting pixel color of 8-bit grayscale image using pointer

    Started by Deeds, 29th November 2020 20:14
    • Replies: 1
    • Views: 6,698
    Cruz
    2nd December 2020, 12:27 Go to last post

  24. QFontDialog BOLD hint on ARIAL not working?

    Started by mustermann.klaus@gmx.de, 21st November 2020 10:20
    hint, qfont, qfontdatabase, qfontdialog 1 Attachment(s)
    • Replies: 1
    • Views: 2,848
    mustermann.klaus@gmx.de
    30th November 2020, 21:23 Go to last post

  25. Unhappy How to connect 2 QCombobox by focus?

    Started by vinh, 28th November 2020 12:14
    c++, focus, qcombobox
    • Replies: 0
    • Views: 7,608
    vinh
    28th November 2020, 12:14 Go to last post

  26. QComboBox editingFinished

    Started by aekilic, 16th April 2009 22:33
    • Replies: 6
    • Views: 15,973
    vinh
    28th November 2020, 08:17 Go to last post

  27. QDockWidget is not getting closed if it is floating

    Started by mqt, 26th November 2020 08:27
    • Replies: 1
    • Views: 4,460
    d_stranz
    27th November 2020, 16:25 Go to last post

  28. Delegate should not commit on error in editor

    Started by TheGrudge, 26th November 2020 09:51
    • Replies: 1
    • Views: 5,033
    d_stranz
    27th November 2020, 16:19 Go to last post

  29. OpenGL offscreen rendering in a thread

    Started by Cruz, 25th November 2020 10:38
    • Replies: 2
    • Views: 5,736
    Cruz
    26th November 2020, 08:25 Go to last post

  30. Question QSerialPort's readyRead() signal is working strange

    Started by Alexander111122, 19th November 2020 22:49
    com-port, qserialport, readyread, rs485
    • Replies: 2
    • Views: 4,551
    Alexander111122
    25th November 2020, 11:53 Go to last post
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