By default a wxGrid acts like that: If a cell or multiple cells are selected and DEL/Backspace is pressed, the cursor jumps into the (first) cell selected and deletes the first character in that cell.
Is it possible to have an Excel - like behaviour in that when this action is performed, the whole content of the cell(s) is deleted?
Just handle wxEVT_CHAR for wxGrid yourself and clear the cell contents when you get an event for one of those keys.
Related
I have two QListWidgets , one named “Commands” on the left side and other named “XML Script” on the right side , I am able to drag and drop items from one List to another, How ever, when I drag one item, I don’t want drop that same item text, I want some changed text to be dropped.
Example: In this example when I dragged “SetScroll Command” from “commands” QListWidget and I am trying to drop this in “XML Script” QListWidget , I need some different text to be dropped like
If I drag ‘Pause Command’ from “Commands”, the dropped item in “XML Script ”should have item with text like “This is a Pause Command”?
How can I achieve this,
I am intending to keep a Map data structure which will have key as “Pause Command” and Value as “This is a Pause Command”. Whenever key text is dragged , value text shall be dropped,
I have a pyqt4 setup with a custom widget as the item of the listwidget. I have two buttons in that custom widget to move it up or down the list by taking it and inserting it either 1 up or 1 down.
When it is inserted the item is still highlighted but the contents are gone.
Here is what is moving the item.
def ChangeInit(self, row, direction):
item = self.initiativeList.takeItem(row)
self.initiativeList.insertItem(row + direction, item)
row = the row the item is in
direction = 1 or -1 depending on which button is pressed
Any ideas why the item appears to be moved but the contents of it not being moved with it or at least not visible?
Let me know if you need more info.
The documentation of QListWidget.addItem states:
Warning: A QListWidgetItem can only be added to a QListWidget once. Adding the same QListWidgetItem multiple times to a QListWidget will result in undefined behavior.
Although this can be interpreted in more than one way (i.e. adding one widget multiple times simultaneously, or adding it sequentially like you do) I sugest that you create a completely new QListWidgetItem object and insert that in the list, just to be sure. Otherwise I don't know if Qt will handle the underlying indices correctly.
P.S. next time I would add the general PyQt label unless it is a problem specific to PyQt4. This might get you some more views (you now only have two after 23 hours).
I have a QTableView with 80+ columns displayed in it. The subclass i have created for QTableView allows has functionality for the standard table stuff i wanted e.g order by columns move columns and rows hide column and rows etc.
However the problem i have is the view's focus. lets say you have all the data in the table, you scroll all the way to the right so you are looking at columns 70-80 (assuming 10 columns fit on the screen at once) if i click the header of row 80 (to order by column 80) the table reorders (as expected) however it also jumps the view to the last focused cell (which as far as i can tell is the cell that was last clicked)
What i want to do is not necessarily refocus on the column that was clicked because this might still change the view what im looking for is to just keep the view's focus exactly as it is instead of having it jump back to where the last clicked cell was?
Is there some flag im missing for focus policy or will i need to get the current view and set the view back to that view after mouse clicks that reorder the table and if so how could this be done.
Im aware i have provided no code for this question but it doesnt seem there is any needed since its not a bug im looking to fix more of a feature im unaware of, if you want to see any just comment
EDIT:
Im using a QSortFilterPorxyModel, this seems to get set once (when i call this->setSortingEnabled(true); after the initial call to this on contruction my table model never calls sort again. I have a slot linked to the header clicked signal, and i set the scroll bars to scrollTo() to the index clicked, but i think the sort is happening after this so it does nothing, any idea of what signal are emitted after sorting so i can catch them and then set the view back maybe?
thanks
Before you do your sort, store the current values for where the scroll bars are with
int vPos = yourQTableView->verticalScrollBar()->sliderPosition();
int hPos = yourQTableView->horizontalScrollBar()->sliderPosition();
then after the sort, set it back
yourQTableView->verticalScrollBar()->setSliderPosition(vPos);
yourQTableView->horizontalScrollBar()->setSliderPosition(hPos);
The signals you are looking for are signals of QSortFilterProxyModel inherited from QAbstractItemModel:
layoutAboutToBeChanged()
layoutChanged()
I couldn't reproduce your symptoms by creating a QTableWidget, filling it up with random stuff, and then sorting a particular column. The selected cell stays selected, but does not become visible if it has scrolled off screen.
So the question is, what is causing the behavior you're seeing. It sounds as though scrollTo() is being called by some other function. Since that's a virtual function, I would override it with a pass-through function and see when it's getting called.
I want to delete a selected row from the table when I click on the delete button.
But I can't find anything regarding deleting rows in the Qt documentation. Any ideas?
You can use the bool QAbstractItemModel::removeRow(int row, const QModelIndex & parent = QModelIndex()) functionality for this.
Here you can find an example for all this.
Also, here is an inline quote from that documentation:
removeRows()
Used to remove rows and the items of data they contain
from all types of model. Implementations must call beginRemoveRows()
before inserting new columns into any underlying data structures, and
call endRemoveRows() immediately afterwards.
The second part of the task would be to connect the button's clicked signal to the slot executing the removal for you.
If you are removing multiple rows you can run into some complications using the removeRow() call. This operates on the row index, so you need to remove rows from the bottom up to keep the row indices from shifting as you remove them. This is how I did it in PyQt, don't know C++ but I imagine it is quite similar:
rows = set()
for index in self.table.selectedIndexes():
rows.add(index.row())
for row in sorted(rows, reverse=True):
self.table.removeRow(row)
Works perfectly for me! However one thing to know, in my case this function gets called when a user clicks on a specific cell (which has a pushbutton with an 'X'). Unfortunately when they click on that pushbutton it deselects the row, which then prevents it from getting removed. To fix this I just captured the row of the sender and appended it to the "remove_list" at the very beginning, before the "for loops". That looks like this:
rows.add(self.table.indexAt(self.sender().pos()).row())
You can use another way by deleting the row from database, then clear the model and fill it again, this solution is also safe when you are removing multiple rows.
I created a Combobox with CreateWindowEx. Everything goes well. But I would like to make a final feature: AutoSuggestion. The Combobox is used to do search text in a document, hence at some point, it have items that are the strings a user searched. The AutoSuggestion should be: drop down the list of items, find those items that begin with the string that a user typed in the edit control, but do not select one of them, do not display all other items, and finally do not change select item when keydown or keyup occurs, only highlight the item and select only when a user press Enter. Do you have any idea how to accomplish this task?
It sounds like you want Autocomplete functionality.