I have searched far and wide and cannot find anything online about my issue even though it seems rather trivial, and i feel like there's just something I'm missing, so I apologise if the answer is apparent.
However, when I use a QComboBox in Qt, When I click on it instead of dropping down like I want it to, it shows the popup with the current selected item as the origin. If that doesn't make sense this is what I am referring to:
It shows the popup starting at the current selected item where the button is. I just want it to drop downwards like any other normal combobox! How can i Achieve this? If i make it editable it drops down exactly how i want it, but i don't want it to be editable!
Does anyone know what's up?
Edit:
I am running Windows 10
Related
i need to hide tabs from a existing project in QT, i don't want to delete the code because i have to set parameters on that code, the Application relay on that too. Seems like QT hasn't built-in hide(); function, i tried to edit stylesheet to make it smaller, but doesn't work too, i've looked on the internet and seems like this is a known issue. Does somebody have some tricks to avoid this?
Only thing i was able to come up with is:
ui->TabObject->setEnabled(false);
basically i disable objects in the tab to make them not usable by the user, but this is not a good thing for the whole UI.
Maybe by calling QTabWidget::removeTab(index) - this removes the tab from the QTabWidget, but does not delete the tab's QWidget.
I apologize in advance for not having more code to show, this is more of a conceptual question. I am working in Qt 4.7 and I have a QDialogButtonBox in my UI to which I need to add several custom buttons*. I set the buttons up like I normally would. For example, if I'm adding a Save button, I would create it like this:
QPushButton *myButton = new QPushButton(tr("Save"));
Usually I could just add this to my UI as is. However, I've found with the button box, it needs to have a "ButtonRole" attached, which are built-in to Qt. The only role that seems close to matching what I want is "ActionRole", but that's still sort of vague as to it's meaning when looking at it later in the code. I know theoretically any of the roles could be associated with this button, but it seems like really bad practice to me to attach an unrelated-named role like "RejectRole" or "HelpRole" to it just to make it work. My question is, how can I create a new role, something like "SaveRole", that I can use for this button? I tried putting a line like #define SaveRole (some int value) in my code and using that since the ButtonRoles are enumerators, but that gave me an error saying it couldn't convert the parameters. I know there's also NRoles in ButtonRole, and it seems like that can probably be used to create new Roles, but I've been searching for about a half hour and am finding it EXTREMELY difficult to find any information on how to use this. If anyone has suggestions it would be greatly appreciated. Thanks!
*For the record, I know how easy it would be to avoid this problem by using QPushButtons individually instead of a QDialogButtonBox, but my project head wants the button box used, so unfortunately I don't have that option.
EDIT: I forgot to mention before but it may be worth bringing up, this button box is pretty large, and all the built-in roles are already in use.
I'm quite new to C++ & Qt, but I would like to implement sliders like in After Effects in an opensource project i'm working on.
I mean, not a "visual" slider (a bar, like at the left of the pic), but
a numeric value, which is shown like an hyperlink;
and which change if you click & slide right or left.
You can either slide on it or click it and directly enter the value.
(source: pencil2d.org)
Any ideas ?
I'm no expert either, but this may help you.
It sounds like you want to create your own widget.
Then you should subclass QWidget, reimplement mouseEvents (to make it respond to vertical "drags") and paintEvents(to make it look the way you want it to look), give it the signals you need. If you don't want to start from scratch, maybe sublcassing QLineEdit you gain some steps. Look this trhead, and this tutorial. This last is a real "eye opener", if you take the time to understand it thoroughly. Good luck!
I am trying to customize the default MFC RibbonBar. I need to reduce its height, change its color etc, but so far i haven't found anything on how to do so. I've been to msdn, and they just tell you how to add new controls on the ribbon.Can any one please point me in the right direction? Is this ribbon control even customize-able? i mean apart from adding categories and other controls on it, i want to change the look of the ribbon.
Some code samples about how to work with MFCRibbonControl would be of great help too.
I need to remove the sorting arrow from a column header. This can be done by calling set_sort_indicator(false) on the column.
The arrow isn't displayed, but the space for it seems to still be reserved. If the title of the column is big enough to fill all the header, the last part is clipped (where the arrow should be).
Is there a way to make the title fill the whole header?
This seems to be a bit weird in GTK+. I downloaded and read through relevant parts of the GtkTreeViewColumn's code, and it seems to use this logic:
if (tree_column->show_sort_indicator ||
(GTK_IS_TREE_SORTABLE (model) && tree_column->sort_column_id >= 0))
gtk_widget_show (arrow);
else
gtk_widget_hide (arrow);
Where arrow is the widget holding the arrow. This seems to indicate that the arrow widget is always packed into the horizontal box that makes up the column's header, and then just hidden (not removed) if it's not supposed to be visible. That will mean it's still there in the box, occupying space and causing the label to be clipped.
I'd recommend searching through the GTK+ bugtracker for an issue about this, and if none is found, create one.
Ok, so I've submitted a bug report to gtk. They said that it is not an issue and it won't be fixed.
I've looked on other graphical toolkits (windows, qt) and their implementation is different, but this doesn't seem to matter to the guys in the gtk team.
Ok you can use set_clickable method to the the column you don't want it to have an arrow
then use signal_connect to the clicked signal and bind it to a function which will use get_sort_column_id to get the current sort order then apply the reverse sort order using set_sort_column_id.