DBGrid, Extended Events - some events not firing ?

[andyhill]

I have many grids (grdSuppliers etc.) created at runtime and during their creation I set up some ExtEvents (BoxReady, Resize etc.), some work and some do not work.

In the past I have ignored but now tidying up my code - please advise how to get BoxReady and Hide to work - Thanks.

  //////////////////////////////////////////////////////////////////////////////
  grdSuppliers.ClientEvents.ExtEvents.Clear;

  //////////////////////////////////////////////////////////////////////////////
  // BoxReady: NEVER FIRES ?
  MyScript:= 'boxready=function boxready(sender, width, height, eOpts) '+
             '{ '+
             '  ajaxRequest(MainForm.grdSuppliers, ''_BoxReady_'', ["w="+width, "h="+height]); '+
             '} ';
  grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);

  //////////////////////////////////////////////////////////////////////////////
  // Resize: FIRES
  MyScript:= 'resize=function resize(sender, width, height, oldWidth, oldHeight, eOpts) '+
             '{ '+
             '  ajaxRequest(MainForm.grdSuppliers, ''_Resize_'', ["w="+width, "h="+height, "oldw="+oldWidth, "oldh="+oldHeight]); '+
             '} ';
  grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);

  //////////////////////////////////////////////////////////////////////////////
  // Hide: NEVER FIRES ?
  MyScript:= 'hide=function hide(sender, eOpts)'#10+
             '{ '#10+
             '  ajaxRequest(MainForm.grdSuppliers, ''_Hiding_'', []); '+
             '} ';
  grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);

  //////////////////////////////////////////////////////////////////////////////
  // Show: FIRES
  MyScript:= 'show=function show(sender, eOpts)'#10+
             '{ '#10+
             '  ajaxRequest(MainForm.grdSuppliers, ''_Showing_'', []); '+
             '} ';
  grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);

 

[Sherzod]

Hello @andyhill

We will check.

But, try also adding an event via grdSuppliers.JSInterface.JSAddListener() and check if it works.

 

[andyhill]

Can you please give me examples on how to add listeners with their appropriate parameters:-

"hide"

"boxready"

Thanks

[Sherzod]

2 minutes ago, andyhill said:

Can you please give me examples on how to add listeners with their appropriate parameters:-

"hide"

"boxready"

Like this for example:

 

[andyhill]

I am after the same parameters as above:-

"boxready" sender, width, height, eOpts

"hide" sender, eOpts

[Sherzod]

22 minutes ago, andyhill said:

I am after the same parameters as above:-

Yes.

'boxready', 'function(sender, width, height, eOpts) {...'

 

'hide', 'function(sender, eOpts) {...'

 

[andyhill]

grdSuppliers.JSInterface.JSAddListener('boxready', 'function(sender, width, height, eOpts){ajaxRequest(MainForm.grdSuppliers, ''_BoxReady_'', ["w="+width, "h="+height]);}'); // FIRES 🙂

grdSuppliers.JSInterface.JSAddListener('hide', 'function(sender, eOpts){ajaxRequest(MainForm.grdSuppliers, ''_Hiding_'', []);}'); // NEVER FIRES ??? 
 

[andyhill]

Can you please advise why "hide" FAILS to FIRE

[Sherzod]

1 minute ago, andyhill said:

Can you please advise why "hide" FAILS to FIRE

How are you hiding the grid?

[andyhill]

yes

[Sherzod]

40 minutes ago, andyhill said:

yes

How?

[andyhill]

procedure TMainForm.UniButton1Click(Sender: TObject);
begin
  grdSystem.Show;
end;

procedure TMainForm.UniButton2Click(Sender: TObject);
begin
  grdSystem.Hide;
end;

[andyhill]

Sent privately

[Sherzod]

Ok.