In TaxVatNumTable form, i need to eliminate white spaces in the field VATNum when a new record is inserted. Now, what i already did is to override the modifiedField method on the TaxVatNumTable:
public void modifiedField(FieldId _fieldId)
{
super(_fieldId);
switch (_fieldId)
{
case fieldNum(TaxVATNumTable, VATNum):
this.VATNum = strRem(this.VATNum," ");
break;
}
}
Works pretty well but is there another way to accomplish this? I am thinking at something like OnPreviewKeyDown event in WPF, check the pressed key and if space, do nothing. Is this possible?
The way you have done it is the best way to do it.
The TextChange method implies test for each keystroke, never do that in AX.
Related
I have a situation, where I have existing code that works with raw pointers, and I'm not permitted to smart-pointer-ify it. However, I am permitted to use smart pointers in any new code I develop.
For example.
I have an existing function like:
void processContent()
{
ContentObject * myContent = new ContentObject();
newFunction(myContent);
}
void newFunction(ContentObject * content)
{
// myVector is just a std::vector<ContentObject*>, defined elsewhere
myVector.push_back(content);
}
void doSomethingWithContent()
{
// There is some logic here, but ultimately based on this logic I want to remove entries, and free the memory they point to.
myVector.pop_back();
}
I have control over the content of "newFunction" and "doSomethingWithContent". But the argument passed into newFunction is fixed. Obviously I could manually delete the pointer in myVetor, before popping it, but I wondered if I can implement smart pointers here so that it happens "automatically" for me?
Can I take a raw pointer passed into a function, and turn it into a unique_ptr, then add this to a container, and have it delete the memory when it's popped from the container?
Thanks
Joey
Assume that you can define your myVector as the following:
std::vector<std::shared_ptr<ContentObject>> myVector;
In that case you can switch on smart pointers in your code and myVector will keep all your objects as you expected:
void newFunction(ContentObject * content)
{
myVector.push_back(std::shared_ptr<ContentObject>(content));
}
void doSomethingWithContent()
{
// There is some logic here, but ultimately based on this logic I want to remove entries, and free the memory they point to.
myVector.pop_back();
}
I've created a lookup with two columns, first one containing and integer which works just fine but the second one has a long name and this is where the problem arises. Users should horizontally scroll in order to check the entire string and even in that case, the column's width is not big enough to display the whole data.
I've found this :
Adjusting column width on form control lookup
But i don't understand exactly where and what to add.
I am not sure but maybe I have to add the fact that this lookup is used on a menu item which points to an SSRS report, in the parameters section.
Update 1:
I got it working with a lookup form called like this :
Args args;
FormRun formRun;
;
args = new Args();
args.name(formstr(LookupOMOperatingUnit));
args.caller(_control);
formRun = classfactory.formRunClass(args);
formRun.init();
_control.performFormLookup(formRun);
and in the init method of this form i added:
public void init()
{
super();
element.selectMode(OMOperatingUnit_OMOperatingUnitNumber);
}
meaning the field i really need.
I am not sure i understand the mechanism completely but it seems it knows how to return this exact field to the DialogField from where it really started.
In order to make it look like a lookup, i have kept the style of the Design as Auto but changed the WindowType to Popup, HideToolBar to Yes and Frame to Border.
Probably the best route is do a custom lookup and change the extended data type of the key field to reflect that. In this way the change is reflected in all places. See form FiscalCalendarYearLookup and EDT FiscalYearName as an example of that.
If you only need to change a single place, the easy option is to override performFormLookup on the calling form. You should also override the DisplayLength property of the extended data type of the long field.
public void performFormLookup(FormRun _form, FormStringControl _formControl)
{
FormGridControl grid = _form.control(_form.controlId('grid'));
grid.autoSizeColumns(false);
super(_form,_formControl);
}
This will not help you unless you have a form, which may not be the case in this report scenario.
Starting in AX 2009 the kernel by default auto-updates the control sizes based on actual record content. This was a cause of much frustration as the sizes was small when there was no records and these sizes were saved! Also the performance of the auto-update was initially bad in some situations. As an afterthought the grid control autoSizeColumns method was provided but it was unfortunately never exposed as a property.
you can extends the sysTableLookup class and override the buildFromGridDesign method to set the grid control width.
protected void buildFormGridDesign(FormBuildGridControl _formBuildGridControl)
{
if (gridWidth > 0)
{
_formBuildGridControl.allowEdit(true);
_formBuildGridControl.showRowLabels(false);
_formBuildGridControl.widthMode(2);
_formBuildGridControl.width(gridWidth);
}
else
{
super(_formBuildGridControl);
}
}
When user types in a QWidget based window, I wanted a QLineEdit to process
all input keys,
so I tried the following two solution in keyPressEvent() of that QWidget:
A.
void Window::keyPressEvent (QKeyEvent *e)
{
switch (e->key())
{
// handle other short cuts
default:
QApplication::sendEvent (lineEdit , e);
break;
}
}
Well, this sometimes crashes the whole interface, especially when I resize window.
B.
void Window::keyPressEvent (QKeyEvent *e)
{
switch (e->key())
{
// handle other short cuts
default:
if ( ! lineEdit.hasFocus () )
{
lineEdit.setFocus ();
lineEdit.setText (e->key());
// i wanted to push the first key input to that QLineEdit , but how ?
// or i'll miss it
}
break;
}
}
Also I'm thinking about giving lineEdit focus all the time, but I can't do that as other events needed to be handled by the main UI.
Update
It won't crash when I filter key inputs, but why ?
default:
if ( e->key() == Qt::Key_Backspace || e->key() == Qt::Key_Delete ||
(e->key() >= Qt::Key_A && e->key() <= Qt::Key_Z )
)
QApplication::sendEvent(filter , e);
break;
}
I believe you are running into a crash because you are using sendEvent to send an event object that you don't have control over.
I don't think the Qt event system expects you to grab its events and throw them in other directions, and it's likely that the event object is getting destroyed before the line edit expects. In the case where you're filtering out input keys, it's probably not crashing because the line edit doesn't care about those kinds of key strokes and isn't using the event object as much as it would otherwise.
If you really want to use the sendEvent() functionality, then I would suggest you create your own QKeyEvent on the stack and pass it to the sendEvent() function (as demonstrated here), or you can just do something like this:
lineEdit.setText( lineEdit.text() + event->text() );
When a widget does not handle an event, it forwards it to its parent. So using sendEvent() to forward to a child is dangerous, as it can make a recursion.
The easiest way of doing it would be to use QKeyEvent::text instead of QKeyEvent::key and you should be OK. You might also try to create a copy of QKeyEvent and pass it to your QLineEdit. Thos are rather hacks than solutions though. If you need shortcuts in main window while QLineEdit has focus (assuming it is in this window) you can use QShortcut with Qt::WidgetWithChildrenShortcut context - this way you can keep your LineEdit active at all times.
I have a problem, I have to stop one Loading class on button click. I already checked some forums related to this. But didn't find an exact solution.
For example:
Public Sub LoadDropDown()
Dim it As Integer
For it = 0 To 1000000
DropDownList1.Items.Add(it)
Next
End Sub
I have to load the DropDown on Load button click and I have to cancel that on cancel button click.
Since populating the control happens on the server, I can't imagine way to interrupt your method from the client. The whole control is being populated, rendered, and only then sent to the client. You might interrupt the callback using ajax, but then the control wouldn't be returned at all.
An alternative could be to load the contents in chunks with ajax and append them to the control on the client-side.
There is no formal way to do what you're asking, but you should be able to achieve the same result if you refactor your code. If certain content shouldn't be loaded for certain users, do that logic in your code behind before it renders to the page.
Per your response to the other answers...
You could consider doing multiple my_ddl.items.add() calls on a timer. Would involve multiple, separate postbacks / ajax calls. For example:
1) add records for 2 seconds (instead of a fixed number of records at a time)
2) check for session("continue") = "true"
3) add more records for 2 more seconds
4) check session("continue")
...
At some point, user clicks cancel, which assigns "false" to session("continue"). Next time your loop checks session("continue"), it will see that it's false and exit.
This would give you a partially-loaded data control. You might want other code to wipe-out the partial update.
I think you could accomplish this with a Session Variable. Forgive me, but I'll have to provide the example in C#, but I'm sure you can get the general idea of this.
private bool CancelRequested
{
get
{
if (Session["CancelRequested"] == null)
return false;
else
return (bool)Session["CancelRequested"];
}
set
{
Session["CancelRequested"] = value;
}
}
public void LoadDropDown()
{
for (int it = 0; it <= 1000000; it++)
{
if (CancelRequested)
{
CancelRequested = false;
break;
}
//Your logic here
}
}
protected void btnCancelRequest_Click(object sender, EventArgs e)
{
CancelRequested = true;
}
The idea here is that the inital loop checks a Session variable to see if it should continue or break out of the loop. If you have a button on the page that will allow the user to set this Session variable to "true", they can essential communicate to the inital request and cause it to break out of the loop. I'm not sure if this would fully accomplish what you're looking to achieve, but hopefully it helps.
I need to add an additional field to InventJournalTrans, that after posting will show up in the InventTrans table. The field is a reference column to a record in another table. What method(s) do I need to modify to make this behavior happen?
Currently, I have already added the fields to both tables and modified the Form to allow the user to enter and save the new field. I just can't seem to find the bottom of the rabbit hole on where the actual posting to InventTrans is occurring.
Ideally, it should just be a:
inventTrans.ReasonRefRecId = inventJournalTrans.ReasonRefRecId;
assignment statement before the
inventTrans.insert();
call. Anybody have a clue on where this is at?
The link above does contain the solution -- I have included the code from that page in case that page disappears or no longer becomes available. Thanks to gl00mie for answering on that site and providing this answer.
You should create a new InventMovement method like this:
public MyNewFieldType myNewField()
{
return MyNewFieldType::DefaultValue; // suppose your new field is an enum
}
Then modify \Classes\InventMovement\initInventTransFromBuffer
void initInventTransFromBuffer(InventTrans _inventTrans, InventMovement _movement_orig)
{
// ... append this line to the end of whatever else is already in this method
_inventTrans.MyNewField = this.myNewField();
}
And finally overload the new method in the InventMov_Journal class:
public MyNewFieldType myNewField()
{
return inventJournalTrans.MyNewField;
}