General and Desktop

If your menu have actions & you want to add tool-tip for the respective actions , can follow these steps: 1: set tool-tip (action.settooltip("Your tool tip")) for every action. 2: write a connect statement on hovered() signal and write a slot for it. 3: in slot definition you have to write QAction* act = static_cast<QAction*>(QObject::sender()); QToolTip::showText(QCursor::pos(),act->toolTip(),menuObject_where you have added action);

@SeyMohsenFls As stated, you have to rewrite the complete file, can't be clearer. You have two possible ways: Read whole file into memory, in some structure (even if it's just a list of lines). Make modifications to it in memory. Write whole file back when completed, e.g. overwriting original file. This is how e.g. a text editor or sort works. Open existing file for read, open a new file for write. As you read each line in, make any modifications and write new line out. At the end probably/perhaps delete original file and rename new file to that. This is how e.g. sed works. Either way you completely rewrite new file. Difference is how much memory you use.

@Mesrine said in Qt cmake deployment API and Cpack not working for macos: Unspecified That was the problem. It seems that install(TARGETS QVaultCli BUNDLE DESTINATION . RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT vaultCli ) Do not add the bundle to the cpack vaultCli component.

@SimonSchroeder See the discussion around https://forum.qt.io/topic/155461/qlineedit-returnpressed-when-something-else-has-a-key_return-shortcut/16 for the pointlessness/potential evilness of the NumPad Enter key ;-)

@SGaist yes

@Rockerz Qt for Linux/X11 - Deployment

@Aliaa did you check this? https://forum.qt.io/topic/136275/trying-to-embed-an-application-in-my-qt-app

@ChrisW67 Thanks! That explains it.

@Mingzhi1213 you did not gave all the information required. By the way, 5.12 is outdated, you should consider to update to at least 5.15 if not Qt 6.

@franco-amato There is an old one but I believe kept up-to-date, QtSingleApplication at https://code.qt.io/cgit/qt-solutions/qt-solutions.git/. There are various alternatives in https://stackoverflow.com/questions/5006547/qt-best-practice-for-a-single-instance-app-protection/. See https://github.com/itay-grudev/SingleApplication for code which claims to be superior to QtSingleApplication .

@jdent said in How do I iterate across the columns of a QTableView so I can find the total width of the table?: @Axel-Spoerl How can I get the vertical scrollbar of the QTableView? Simply with verticalScrollBar() cause QTableView inherits of QAbstractScrollArea ;)

@StudentScripter This? [image: be5a8ab0-8e53-44e3-bfbd-2ec07f548924.png] It's called Split Window / Window Tile or something like that and is a Window Manager functionality (in your case, X on Windows 7/10). Because frameless Qt toplevel Widgets don't request a Window decoration, I think X does not recognize that you want to snap/split it anyway. This is probably not doable with Qt only and platform/Window Manager dependent, maybe you need some extension. Haven't found one though. Edit: If you are fine with not using the native functionality, you could try to implement something like that using your Qt widget... when enabled, calculate the requested area (1/2, 1/4...) of your screen size and geometry and resize + move your widget accordingly.

@Chris-Kawa 6 lines of code are worth a thousand words ;) Perfectly clear now!

@jdent You show a screenshot where so far as I can see the table view fills the width of the dialog. So you may know what else you mean, and perhaps someone else will, but I do not. I now see you have created https://forum.qt.io/topic/155541/how-do-i-iterate-across-the-columns-of-a-qtableview-so-i-can-find-the-total-width-of-the-table. I assume that is now the question you wish to ask. It would nice if you took the time to cross-reference from that question to this and vice versa so that people knew and did not spend time trying to answer both....

@AnneRanch said in How to change "centralWidget" setting?: I will agree ,the "boundary" between QtDesigner GUI and QtCreator code is a challenge - especially when "the code " is "self documenting" There is no boundary and the code / Qt is very well documentated.

@jdent Answered https://forum.qt.io/topic/115490/cdialog-oninitdialog

@JonB thank you so much. That was right. there was an object that was calling deleteLater in different places and that caused a crash. It was definitelly on my side. Thanks!