I have a form that pops up in my application. When the form is in process of closing, the user can click on the form and the event is handled by the main application when the form is finally closed.
Is there a way to prevent any events from being recieved by the main form unless the pop-up form is closed and no longer visible?
Cursor.Current = Cursors.WaitCursor;
... Do some work...
RbForm form = new RbForm(Steps);
form.ShowDialog();
form.Dispose();
... Do some more work.... [**]
Cursor.Current = Cursors.Default;
[**] Clicking on the form here will trigger an event on the main application window once the form is closed.
Thanks.
You don't need to.
ShowDialog shows the form modally, so that no other forms in your application will receive any input until the dialog is closed.
Related
In the project source, I detect a previous instance of my app, and open it then terminate the new instance.
Remember, I do this in the project source.
The application has a main form that can open a second modal form. If the second, modal, form is not open when the app is minimized (or the user switches to another application) it works fine.
The old main form is opened and the new instance is terminated. However, if the second modal form is minimized, its parent main form is also minimized. That's good UI behavior.
The problem exists when attempting to restore the modal form by a new instance. I can't seem to get the modal form to restore.
I can restore the main form, however the modal form still has focus, but is hidden.
This prevents any user action on the now visible main form. From the user's point of view, the app is hung.
The modal form's caption does not change, so it's easy to get its handle.
The app has a DataModule, which is created first. I do all the duplicate app testing in the project source after the DM is created, but before any other forms are, and well before Application.Run.
That assures that the handles I acquire come from the existing app.
I've tried:
PreviousHandle := FindWindow(nil, PAnsiChar('Form Editor'))
ShowWindow(PreviousHandle,SW_RESTORE);
ShowWindow(PreviousHandle,SW_NORMAL);
BringWindowToTop(PreviousHandle);
The best I've gotten out of variations of this is restoring the main form.
When the handle is for the modal form, it sometimes shows in the lower left as a minimized form.
I say sometimes because I've tried so many variations of the above that I don't remember exactly how this code sample behaved.
All I know is, whatever I've tried from the project source did not restore the modal form, so I tried sending a custom Windows Message to the modal form.
I know the message arrived and the message handler caught it. Example:
if not PostMessage(PreviousHandle,WM_RESTORE_FORM,PreviousHandle,0) then
ShowMessage('Can''t automatically show the Form program. '+
'Please click the taskbar icon.');
Here's what the message handler looks like. It is in the Modal Form. As you can see, I pass the form's handle as a Message param. I've verified that it arrives.
Here's the code in a TApplicationEvents OnMessage event:
procedure TfrmDisplayForm.ApplicationEvents1Message(var Msg: tagMSG;
var Handled: Boolean);
var
oldHwnd : THandle;
begin
if Msg.message = WM_RESTORE_ACORD then
begin
oldHwnd := Msg.lParam;
if ForceForegroundWindow(OldHwnd) then ShowMessage('true') else ShowMessage('False');
Handled := True;
end;
end;
Here's the function that is called. However, I've tried various ShowWindows(...) combinations with no luck. Actually, this function didn't do the trick either.
function TfrmDisplayForm.ForceForegroundWindow(hWnd: THandle): BOOL;
var
hCurWnd: THandle;
begin
{credit Peter Below}
hCurWnd := GetForegroundWindow;
AttachThreadInput(GetWindowThreadProcessId(hCurWnd, nil),
GetCurrentThreadId, True);
Result := SetForegroundWindow(hWnd);
AttachThreadInput(GetWindowThreadProcessId(hCurWnd, nil),
GetCurrentThreadId, False);
end;
I've been working on this for a couple of days, and don't know what I'm doing wrong.
Question: How can I restore the modal form? It must be possible because it restores perfectly when the taskbar icon is clicked.
Don't try to restore individual forms instead use TApplication.Restore
Calling TApplication.Restore will restore all of the application windows to the state before the whole application was minimized same as clicking on TaskBar icon of the application.
PS: I also hope you are not allowing users to minimize individual Modal forms. Or you may also run into a problem where application seems to be stuck.
I am using <q-modal>(Quasar Framework) for a form. On clicking Add button a form will pop over. In this, I am validating each form tags, after clicking submit button. To close the modal, I am using #click="$refs.maximizedModal.close()" for submit button.
Everything works fine. Now I need to retain modal if the validation is not returning true or if validation satisfies then the modal need to be closed.
Is there any method to do conditional submit in Vue js?
You should make a custom function for the submit of the form and use it, something like this :
....
methods{
checkForm(e){
if(VALIDATION_IS_TRUE){
//Validation has passed, we submit the form OR close the modal
$refs.maximizedModal.close(); // Maybe this.$refs.maximizedModal.close()
e.target.submit();
}else{
//The form is not validated, do something to inform the user
}
}
}
and instead of using the #click for the submit button, add this to the form element :
<form #submit.prevent='checkForm($event)'>
Hope this helps!
I have a modal/pop-up form frmEditContact open
on this form there is a combo box full of addressescmbAddressList, populated by a query.
when the user wants to add an address that doesn't exist there is a button that opens the frmAddress where they may add an address.
frmAddress allows them to enter an address to the list and gives the option to save, or cancel (both actions close the form after). with this form closed, the focus is now again on frmEditContact
I would like to repopulate the combo box using docmd.Requery cmbAddressList after they close the other form
I'm not sure where to handle this, I've tried On Avtivate, On Load, On Update, On Open, On Focus...but none of them fire as I keep the frmEditContact open when they are using the other form
is there a way to keep frmEditContact open the whole time, but still an action Event that will fire so that I can Requery? And does On Activate not work with modal forms?
You can requery the combo from frmAddress :
Forms!frmEditContact.cmbAddressList.Requery
I suggest you use the save button to run the requery.
Try this in your frmEditContact code.
DoCmd.OpenForm "frmAddress", acNormal, WindowMode:=acDialog
Me.cmbAddressList.Requery
Since frmAddress is opened in dialog mode, the next line (Requery) will not run until after frmAddress is closed.
I need help with some things regarding windows form validation:
closing form using standard form closing button (X) triggers validation of all controls.
Is there a way to supress it when closing form using this button, and force it only when pressing my own button?
validation of textbox (possibly other controls, I tested only textboxes) wont invoke when i change text (value) programatically. I need to type text directly into textbox if I want validation to be triggered later, before form is closed. How to tell the form that some control needs validation (but not to trigger it immedidately)?
Thanks.
EDIT:
(1) solved, using this answer.
(2) now, after i set AutoValidate property to false and added ValidateChildren() to my button, only 1 control is being validated with its current value, values of all other controls are revert to value binded to them from DataSource object . I checked it in Validating event - only first control validating keeps its current value, after this validation is finished, other controls' values are replaced with values from DataSource object. I don't understand why. Any clues?
Try this, maybe it could help you. ( for 1)
In the Forms Load event you can put
this.ControlBox = false;. This will hide your X button with the other buttons at the top.
The Form has a Form1_FormClosing event. In that Event you could call the triggers you need. Put a button on the form, and in button_Click event you type this.Close().
I have a Grid object and added a [ (+) New Client ] button which I'd like to open a popup form to create the new client with a couple fields.
I've looked at the code examples in the website but haven't found how to do it (sorry if I've missed something).
This is the current page code:
function page_clients_listing($p){
$g = $p->add('Grid');
$g->addColumn('text','first_name');
$g->addColumn('text','last_name');
$g->addColumn('inline','telephone');
$g->addColumn('expander','comments');
$g->setSource('client');
$g->addButton('With Icon')->set('Add New Client')->setIcon('Plus');
}
Thanks in advance!
You can either create a popup or a dialog. Dialog is based on jQuery UI dialog implementation. Popups are likely to be blocked and are harder to control.
This is actually working for any object (you can apply to view, button, image, icon, etc), but I'll use button).
$b=$g->addButton('Add New Client')->setIcon('Plus');
$b->js('click')->univ()->frameURL($title,$url);
// OR
$b->js('click')->univ()->dialogURL($title,$url);
$url would most likely be returned by api->getDestinationURL(). The other page would be loaded and scripts on that page will be evaluated. Let's say you are on other page and now need to close the window.
$result = $this->addButton('Close')->js('click')->univ()->closeDialog();
closeDialog() returns a jQuery chain object pointing to a view which originally opened the frame. As a result if you do $result->hide(); then after dialog is closed, the original button ('add new client') will also be hidden.
Here is example to show some additional things you can do with frames, reloading and custom event handlers:
http://agiletoolkit.org/example/refresh1