Tab canvas never displayed

Hello alll,
i have just created a form with master form and tab canvas
have no reason why on run time only the master block is displayed ..?!!!
==================================================
Have any one some reasons...??
Regards,
Abdetu..

Hi again,
i found it...
My problem was that all canvases has same view port so i have changed the the view y position on canvas on the tab one and so it wa disappearing behind the content one since both have the same view y position =0
Regards,
Abdetu.

Similar Messages

Tab Canvas

Hi,
I am using Forms 10g. I have Content canvas named CANVAS1 display few items from BLK1. I created a tab canvas called TAB_CAN contains TAB_PAGE1 and TAB_PAGE2, display items from BLK2
I would like to show the form in enter query mode and Form should display both CANVAS1 and TAB_CAN
Content canvas only displayed if i write in when-new-form-instance
show_view('canvas1');
show_view('tab_can');
go_item('blk2.item1);
go_item('blk1.item1)
enter-query;
tab canvas only displayed if i write code like this in write in when-new-form-instance
show_view('canvas1');
show_view('tab_can');
go_item('blk1.item1)
go_item('blk2.item1);
enter-query;
So, I request you to write a code to display both canvases and control should be in contant canvas and form should be enter-query mode.
Regards,
Murali

Hello Murali,
As you are saying you want to show a Content canvas (Canvas1) and Tab Canvas (Tab_Can) both at the same time, you need to use more than one window for this.
Actually at any instant of time, you can show only one canvas on any window. So have two windows WINDOW 1 and WINDOW 2.
In Content canvas, set the window as WINDOW1, and in WINDOW1 set the primary canvas as CANVAS1. And, for tab canvas actually you should have another content canvas(CANVAS2) on which you have placed this Tab_Can. So in content canvas (CANVAS2), set the window as WINDOW2, and in WINDOW2 set the primary canvas as CANVAS2.
It will work i feel.
Regards,
Yathish...

Tabbed canvas on a tabbed canvas

Is it possible within 10g forms to place a tabbed canvas on the tab page of another tabbed canvas? I am not seeing a way to do it, but I if someone else has an idea about this, it would be much appreciated.
Thanks,
c

Thank you for the input. I have a three tabbed main canvas and on the first tab page I have two blocks in a master-detail relationship. The detail block has so many fields displayed that putting another field on it would be difficult without decreasing the size of the other fields or increasing the size of the window and canvas which would in turn effect the other tab pages and all other forms using the same window size. If I were to use the tab canvas on a tab page of the main tabbed canvas would I need to shrink up the main canvas in any way to display the topmost canvas, which represents the detail block, at the bottom of the page? I would still need to display the entire tab page of the main canvas for the sake of the other tab pages or else wouldn't shrinking the main canvas briefly mess up the coordinates of the other fields displayed on the other tab pages?
Also how do I specify that I want the details tabbed canvas to display on the first tab page of the main tabbed canvas? I didn't see in the property palette of the details tabbed canvas an option to tell it to display on a tab page of the main tabbed canvas.
Thanks,
c

Tab Canvas displaying Stacked Canvas at runtime disappears?

Hi,
I have 3 canvases that contain the following:
1) Content Canvas -- This contains the TREE item.
2) Tab Canvas -- A tab canvas with a single Tab Page
3) Stacked Canvas -- This is a Stack Canvas with a few
text items on it.
4) Single Window.
======At runtime the following actions occur: ==========
1) The Viewport of the stacked canvas is set to the
Viewport of the Tab Page on the Tab Canvas so that it
looks like the Tab Page has a vertical and horizontal
scrollbar with text items displayed.
2) A text item on the Stacked Canvas is in focus as soon
the as the form window is displayed.
===================Problem is : =====================
1) When I select a Node of the Tree Item, the Tab Canvas
automatically disappears(or becomes invisible) , as a
result the stacked canvas displayed within it at
runtime also becomes invisible. I am left with only
the Tree item being displayed.
=======================================================
PS : I have never experienced this problem with just the
content canvas and the Tab Canvas together.
Any soultion to this problem is most appreciated.
Thanks
Sharath

I am experiencing the exact same thing. The width of the tabs in the layout editor is varied depending on the length of the text. However, at run-time, the width of the tabs is fixed, causing the tabs to be wider than the window and a set of VCR buttons to appear in the upper right corner of the canvas. Personally, I think this is a Forms bug. Why would they intentionally let us set the width to variable at design-time only to force a fixed width at run-time?

Display stacked canvas on tab canvas page

Hi,
I am using Forms 10g. I have Content canvas named CANVAS1. I created a tab canvas called TAB_CAN contains TAB_PAGE1 and TAB_PAGE2, Stacked Canvas called STACK1.
If if create tab canvas on content canvas thourhg labout editor. It's display well when forms run. But, i have created manually.
1. How to display tab canvas programatically.
2. How to display stacked canvas on TAB_PAGE1
Regards,
Murali

Looks like you are in the wrong forum.
Please post this in the [Forms forum|http://forums.oracle.com/forums/forum.jspa?forumID=82]
Timo

When I load a page, the title on the tab never appears, it always says "New Tab" or "Connecting..." and ultimately never displays the actual title. [SOLVED]

When I load a page, the title on the tab never appears, it always says "New Tab" or "Connecting..." and ultimately never displays the actual title. It's really no more complicated than that, but it's pretty annoying, it happened when I updated to Firefox 4, and it happens both at work and at home.

I seem to have solved my own problem. When I disabled the add-on "Tab Renamizer" everything started working fine.

How to change content/stacked canvases to tab canvas

Hi,
I have created a form which has one content canvas and multiple stacked canvases. The content canvas displays the first page and then we hv to click on next to go to the next stacked canvas and so on. I want to try making it in tabs (tab canvas) and then I will decide which one looks better and performs good.
Can you guys please give me a detailed instruction on how to convert my content and stacked canvases to tab canvases. I have never done tab canvas. I tried one, I changed one of my present stacked canvas to tab but all the fields and texts were gone and there were just two tabs in it.
Please suggest. Thanks in advance.

Might get a better response in the Forms forum...
Forms

Forms 5 Tab Canvas & Horizontal Scrollbar

We are trying to implement a tab canvas which will hold a multi-record data block. The difficulty is that we would like to display a lot of fields and there is no Horizontal Scrollbar easily available for the Tab Canvas.
We are thinking about "simulating" a tab canvas by using stacked canvases. The stacked canvas allows us to have the scrollbar, but looses some of the look & feel of a tab canvas.
Anyone try to do this in Forms 5? How about anyone try to place a stacked canvas on top of a tab canvas?

We're using forms 6.0.8.8. Our standard practice is to never put items on a tab canvas, instead we put stacked canvas' on the tab canvas. Besides having canvas scroll bars, it also provides a basis to work around documented bugs for refreshing/resizing windows when returning from other forms/windows of different sizes etc.
null

How to create tab canvas from content

Hi,
I have created a form which has one content canvas and multiple stacked canvases. The content canvas displays the first page and then we hv to click on next to go to the next stacked canvas and so on. I want to try making it in tabs (tab canvas) and then I will decide which one looks better and performs good.
Can you guys please give me a detailed instruction on how to convert my content and stacked canvases to tab canvases. I have never done tab canvas. I tried one, I changed one of my present stacked canvas to tab but all the fields and texts were gone and there were just two tabs in it.
Please suggest. Thanks in advance.

I will do so:
I will create a blank tab canvas and then I will cut and copy in every tab page the frame of the content canvas
A tab page for every content canvas
Regards

Tabbed canvas doesn't show up.

Hi,
I have a form that has some general information displayed at the top of the form and then a tabbed canvas underneath it with some more advanced information split up into different catagories.
The problem is then tabbed form does not show up unless I page down to change the block to one that is displayed in the tabbed canvas.
Any ideas???
TIA.

Ah that worked. Thanks alot.
Just for my own knowledge what does raise on entry do??? I'm guessing brings the canvas to the front of the screen so anything not directly on that canvas is hidden behind it???
This is the first time I've used a tabbed canvas so never had to use it before as I've only been working with forms for a couple of months.

Oracle Forms 10G(tabbed canvasses not working the same as in Forms 6i)

Hi everyone,
I have a form which gets called from another form through a list of value. The called form(second form) has a group of tabbed canvases which get displayed depending on the parameters passed from the first form.
The Form is working prefectly fine in Forms 6i but when I converted the same form in to forms 10G it does not seem to work the same way. The tabbed canvasses are not getting displayed. I am manually having to press the execute query to get data displayed in the tabbed canvasses. I checked the parameters that are being passed and they are the same as that in Forms 6i.
Please let me know where my 10G Form is going wrong. Appreciate your help, please send me an email on [email protected]
Thanks

duplicate
Re: Oracle Forms 10G not working as Oracle Forms 6i

Tab canvas after content canvas impossible?

I am still having problems with tab canvases that come after content canvases in Designer 6i. I have changed the QMSO$BLOCK.QMS$BLOCK_INFO VISIBLE property to YES and this allowed me to generate the form, but now I have the little QMS$BLOCK_INFO item displaying and worse yet all of my multi-record tab pages only display 1 record. Is there something else that needs to be changed in the object library? Can I even generate forms with 2 or more tab pages after a content canvas in Headstart 6i (patch 13)?

I recommend a couple of things:
- Create a copy of cgso$block and call it something like my$block_tab_problem. In cgso$block, set qms$block_info back to VISIBLE false. Set qms$block_info to VISIBLE only in the my$block_tab_problem copy. In designer, for each MCO that is on the base canvas and has child blocks on tabs on the same canvas, set the Template/Library Object property to my$block_tab_problem. In other words, only apply this change where you absolutely must apply it - the master block of this particular layout.
- Code a pre-form trigger that sets the qms$block_item trigger to VISIBLE false using the set_item_property built-in. Again, you will only have to include this code in the few forms where you have this layout. This will hide the ugly item.
- This will eliminate the problem with the multi-record blocks because they inherit qms$block_info from cgso$block which has been set back to VISIBLE false.
Regards,
Lauri

Forms 6i, Stacked & Tabbed Canvas- Wierd behaviour

Hi,
I am having a wierd problem:
Scenario:
I have a datablock of 40 columns.
I put 1 (say col-1 on page_1 and col-21 on page_2) column each on two different TAB pages.
I created 2 stacked canvases: page_1_stacked & page_2_stacked
I put col-2 to col-10 on page_1_stacked
and col-22 to col-40 on page_2_stacked
I used the following code to show/hide the appropriate cols/stack canvases when the users changes Tab pages:
[when-tab-page-changed
if (:system.tab_new_page ='PAGE_1')
     then
     show_view('PAGE_1_STACKED');
     hide_view(''PAGE_2_STACKED'');
elsif (:system.tab_new_page ='PAGE_2')
     then
     hide_view('PAGE_1_STACKED');
     show_view(''PAGE_2_STACKED'');
end if;
Problem:
Everything seems to work fine, the stacked canvases show/hide as expected, but --->as soon as I put my cursor in any column on TABBED PAGE (here col-1 or col-21), all the stacked canvases vanish
-->if as a result of above case where I put the cursor in a tabbed-page col and canvas vanished, I navigate to the next field (which is on canvas), the canvas shows up (which is normal)....but then this canvas wont get hidden with my hide view... and end up with all stacked canvases shown together or none at all
I have played around with all the properties and am really trapped.
Please help!
Thanks.

Devang, are you aware that if you put the cursor focus in a field, Forms will ignore any show_view or hide_view commands if they cause the cursor to disappear? And if your cursor focus is in a field in a stacked view, hide_view will not work. Forms will not let you hide or cover up what ever item is identified by :System.Cursor_Item.
I do not know why you need Col_1 or col_21 on the tab canvas. Put them on your stacked canvasses, too.
Use a when-new-item-instance block-level trigger to determine which tab page should be displayed. If :System.trigger_item = col_1 through col_20, make sure Page_1 is displayed, and for col_21 through col_40, make sure Page_2 is displayed.
Similarly, use a when-tab-page-changed trigger to move the cursor to the correct canvas. You wouldn't even need to use show_view or hide_view, Forms will do that for you each time you move into an item on either canvas.
And why are you using two canvases anyway? Since you are using a horizontal scrollbar, why not put them all on a single canvas? (And then you wouldn't need the tab pages.)

How: Stacked Canvas on Tab Canvas ?

Hi All,
I have content canvas in which I have placed tab canvas with 5 tabs, and on one of the tab I want to place stacked canvas because I have to display multiple blocks on this stacked canvas with vertical scroll bar (This I can specify by saying Vertical scroll bar as Yes for Stacked canvas).
There is a restriction that, it is not possible to place stacked canvas on tab canvas (Possible only on content canvas), so is there any other workaround.
Please let me know if anyone has worked on similar type of screen development. Appreciate if anyone can provide some sample code.
Advance thanks for your time and help.
Regards
CJ

Hi All,
I found the solution and successfully implemented the desired functionality
DECLARE
     v_Tab VARCHAR2(1000);
BEGIN
     v_Tab := GET_CANVAS_PROPERTY('CAN_TABS', TOPMOST_TAB_PAGE);
     IF v_Tab = 'a1' THEN
     GO_BLOCK('BLK1');
          EXECUTE_QUERY;
     ELSIF v_Tab = 'a2' THEN
          GO_BLOCK('BLK2');
          EXECUTE_QUERY;
     ELSIF v_Tab = 'a3' THEN
*          Set_View_Property('CAN_STK_FIS_NET',HEIGHT,280);*
*          Set_View_Property('CAN_STK_FIS_NET',WIDTH,630);*
*          Set_View_Property('CAN_STK_FIS_NET',DISPLAY_POSITION,6,135);*
*          SHOW_VIEW('CAN_STK_FIS_NET');     *
          GO_BLOCK('BLK_FIS1_GRID');
          EXECUTE_QUERY;
END IF;
END ;
I have seperately created stacked canvas 'CAN_STK_FIS_NET' and placed multiple blocks as per requirement and able to achieve the functionality.
Please let me know if any one need any detail explanation.
regards
cj

FRM-13002 : Stacked and Tab Canvas must be created within Content Canvas

Hi,
I have a Tab Canvas with 2 pages on it.
In one of the pages the data to be displayed will be
out of the region(size or length) of that page.
I read in this forum for the same problem, the
member had suggested to use a Stacked Canvas on that
Tab page alone and enable the scrollbars of the stacked canvas.
When I drag and drop a stacked canvas on a tab page
of the tab canvas I get the following error:
FRM-13002 : Stacked and Tab Canvas must be created
within content canvas.
Any help is appreciated.
Thanks in advance
Sharath

Hi,
I am breaking my head over this.
I am still unable to solve this issue.
========The Requirement is as follows :===========
When I select a Tab Page of a Tab canvas, I get a
combo box with items in it. When I select an item from
the combo box, based on the item selected, I am
retrieveing the data from the database and displaying
it in that Tab Page itself. This data is in a matrix
format. i,e Has a number of rows and columns.
Without a Horizontal and a Vertical Toolbar attached
to the Tab Page I would be unable to view all the records
that are displayed on that Tab Page.
Any suggestions or examples is most welcome and
appreciated.
NOTE : ALso in what situations can we use a stacked
canvas, if the designer does not allow me to
use it with other canvases?.
Thanks in advance
Sharath.

Tab canvas never displayed

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