Calling stacked canvas

hi everyone,
currently i am working in oracle forms ( 6i ). how to call the stacked canvas through coding when the radio button is clicked.

Show_View is not allways a good workaround.
As i said, the displayed canvas is the one that include item which have the focus.
Show_View will do nothing if you want to display a stacked canvas which is behind another one that get item focus.
Francois

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Calling values to a Stacked Canvas

Is there a way to pull information from different tables onto a stacked canvas? I want to be able to call this canvas from an Order form to check on the payment history of customers. I would like to grey out (disable) the text items I create on the stacked canvas so that it appears like text are directly written on the stacked canvas.

Here's another option...
Instead of the Control block that duplicates the items that you want to show on the stacked canvas, you can just duplicate the item in whatever block it is in. Give the item a different name, set the "Synchronize With Item" property to the actual item, make the new item a non-database item, and set the new item's canvas to your stacked canvas. Then you do need any code to copy the values. It will always be synchronized with the original item.
It isn't that much different, but you don't have the side effect of changing blocks when you navigate to the item on the stacked canvas.

Calling content canvas with stacked canvas

Hi.
i have a content canvas in that i have a linked stacked canvas...
from some other screen if i call content canvas by show_view('Content canvas') i am only getting the content canvas. but i am not getting the linked stacked canvas. weather it is correct ,or not . if i want to see the stacked canvas on content canvas ,i nee to call the stacked canvas too?.
please clearify me..
thanks in advance.
vijay.

Normally, it is not required to explicitely call a show_view on a stacked canvas.
In Object Navigator, assure that the stacked canvas (in terms of a sequence) is below the content canvas.
If the stacked canvas is still not shown issue a GO_BLOCK() and / or GO_ITEM() e.g. in the WHEN-NEW-FORM-INSTANCE Trigger
to the block having at least on item on the stacked canvas to be displayed.
In doing so, you must assure that at least one item on the block (having the stacked canvas assigned) is able to receive
the focus (is enabled and it might be required to set the keyboard navigable property (not sure about that)).
Due to the internal navigation of oracle forms, the canvas should get displayed when an item on the canvas receives the focus

Stacked canvas behaviour 6i c/s

hi,
My form has two canvases.
1. content in own window
2. stacked content in own window( which is only 5 cm by 5cm wide and does not cover content when called.
COntent canvas and window are maximised in when-new-form-ins trig.
The problem i am getting is when I call stacked can in its own window from content can via button my content canv
resizes itself enough so that scroll bars appear.
So that when i exit stacked can i have to maximise the content to such a state as when I first run the form.( all coded in when-new-form-ins) i.e dbl click on win title bar.
Does anyone know if this is default functionality or is there something I need to set ?
thanks.
n

hi tony
sorry for not making it very clear...
So you want to Press a button, go to a stacked canvas, pause and accept input on that canvas, then proceed to do some calculations, and all of this on >one button?what you understood up to the bold marked area is correct. after getting the input in stacked canvas the user press a back button there to hide and come out. The calculations are on the content canvas button itself...( which is used to display the stacked canvas)
Kris

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

Scroll Bar on Stacked Canvas [Solved]

Hi,
I am trying to do the following. I have a form FORM A. Another form FORM B is called with a click of a button on FORM A. FORM B is having 2 blocks each on a stacked canvas. BLOCK 1 is master block and BLOCK 2 is detail block. Table on which BLOCK 2 is based on has 200 columns. Below is the property set for this block.
1. Number of Records Displayed: 1
2. Record Orientation: Vertical (To see 200 columns vertically).
Now issue is that only 20 records (columns actually) are displayed in the viewport. And user has to tab out to go to next record (column).
I want to put a vertical scroll bar here so that user can scroll down. I am not sure how to achieve this. Will scroll_view work in this case?
Forms Version: 6i
Thanks and Regards
Amit Trivedi
Never Mind got it working now.
Edited by: ATrivedi on Jun 18, 2009 5:06 PM

Set the Block2 canvas property
Show vertical Scrollbar -- yes
Please mark helpful/correct
kanish

Tab canvas disappear when the main stacked canvas reach the end of column

Hi all,
I have 3 canvas ( 1 main canvas, 1 stacked canvas ) and this link to 1 tab canvas. All these are in the same window.
Whenever using the keyboard to press enter navigate from column to column and when it reach the end of the main canvas which is about to jump to the stack canvas, the two canvas ( stacked & tab ) was hide by itself. Even I have stated earlier to show all canvas in the pre-block trigger. when I keep on press the enter to jump to the next stacked canvas, this stacked canvas is being shown again. My tab canvas was not appear if I am press the enter key. However, if I press the arrow key down the tab canvas is appear. This I wasn't do any code to call the tab canvas.
When I keep on press enter and reach the end of the stacked canvas again the tab canvas is disappear, unless I have press the arrow key down to display the tab canvas.
Trying to use show_view( tab canvas ) in many trigger but still does not show the effect.
Anyone has this experience before ?
Thanks.
Lim

Hi Lim
Pls check this hope it helps u to recognize dealing with muti-canvas in 1 window...
how to use stack canvas in tab canvas in oracle forms
Regards,
Amatu Allah.
Edited by: Amatu Allah on Sep 22, 2011 2:23 AM

Stacked canvas appearing over content canvas by default

Hi Guys,
I have a Main content canvas and a stacked canvas. Both are having common single window attached to them window type is Document.
When I launch this form then main content canvas is displayed but with stacked canvas on top of it.
Control is in main content canvas but stacked canvas is over main content canvas.
This stacked canvas should appear after some action like list change or button push which are on main content canvas.
I have checked there is no go_item call for any objects on this stacked canvas.
I have tried with commenting the code which shows canvas (show_view), still the stacked canvas appears on top of content canvas.
Can anyone guide me on this?
Thanks,
Av.

change the visible property of stack canvas to no and
when u want to display that canvas,,
use GO_ITEM(to send to any item in stack canvas)...
and to hide use HIDE_VIEW('your canvas name');
and be sure when u running the form, your cursor wont go to stack canvas items... because when the cursor goes there, the canvas will appear..
-- Aamir...

Tab-Canvas and Stacked-Canvas (Forms 5.0)

Is it possible to design a tab canvas that contains stacked-canvas? I can't create it!

Yes - it is possible to design a tab canvas that contains stacked-canvas. Create a separate canvas with its own block and you can call go_block and the canvas/block will show. You can also call show_view but the canvas you call must be of the type stacked. (aside - a tab canvas seems to automatically act like a stacked canvas). I have used a canvas w/block that sits at the top of the screen by setting it to be only 60 points tall (and it is the first block in the list) then in a when-new-form-instance trigger I call show_view('tab canvas name') and have its viewport begin at 60, therefore the tab canvas fits right under the header canvas. You can then leave this to call other canvases/blocks and return and set up the same situation again. Sometimes I have gotten strange results where no matter what I do it will not show the tab canvas - at this point usually you recreate what won't show and it will then work.
good luck.

Show stacked canvas on Save

HI,
I have a requirement as below.
On click of Oracle forms default Save button, I should show a stacked canvas to the user to enter some values and then press save button in that canvas to commit all the changes in the form.
Any idea how to implement this?
Thanks & Regds,
Nandakumar

Well, let me put it in this way. I have a screen where the user enters some data first time. Next the user queries the data and does some changes, this time I want to capture the details of why this change was made. So I have to show a pop window by using stacked canvas and ask the user to enter the log details before committing the form.
So that's why I want to override the default save button and call this stacked view and then after entering the data, press save button on the stacked canvas screen itself.
Regds,
Nandakumar

Stacked Canvas Layout and Design

I am trying to create a canvas template for use in our development environment. What I am wanting to do is to create a header and a footer section on this template with a stacked canvas in the middle. This stacked canvas would hold all of the content, data and controls for each form. This stacked canvas is the only thing that would change. The header and footer would look the same for each form. I am trying to create something similar to an HTML page with frames that defines header, content and footer frames. I want the user to be able to vertically scroll only the stacked canvas while the header and footer stay in position.
My question is: How can I use the tools in Forms Builder to place controls in the stacked canvas? The builder does not allow me to scroll the stacked canvas in design mode so I can't reach all the areas of the stacked canvas. Does this make sense?
I am using Forms 10g.
Thanks...

It isn't exactly clear, but assuming you have a content canvas (which I like to call the parent) and a stacked canvas "stacked" on top of the parent the there are several ways to put objects on the stacked canvas. Probably the easest and clearest is to simply find the stacked canvas in the Object Navigator and double click on it. This should open the Layout Editor with the parent canvas window selected (white boarder) and the stacked canvas displayed on top and selected (black boarder). Now just draw your objects on it. You can verify that they are on the stacked canvas by looking at the Properties for each object. You should see where you can choose which canvas you want the object to be displayed.
If this does not work, look in the Builder menu "View" > "Stacked canvas..." and ensure that your stacked canvas is not being hidden. If the stacked canvas is already displayed in the Layout Editor, this menu item may be disabled.
I am assuming you are using Forms 10.1.2 or newer. Older versions will be slightly different.

Validation vs Stack canvas on tab page

Hi,
I have a problem about how to show/hide view when validation was triggered.
My situation is:
- I have a 3 pages tab-page. On the first tab, I have a stack canvas. I have codes to show the canvas at When-new-form-instance and show/hide the view at When-Tab-page-change.
Problem:
- I click on the third page and enter something wrong values on a field and then I didn't go to another field, click the first page directly.
The oracle form shows the first tab without the stack canvas and the error message popup at the same time.
- We have a backend procedure which is used to give the error include the Raise form_trigger_failure. When the validation is fail, this procedure will be called to give the error message. It is a standard procedure so we must use it.
- I tried to Show_view before or after the error message, but it cannot help.
Question:
Is there any method to help this problem? Thanks for advance..
I am using Forms10g.
Regards.

Another solution without a timer : You can use the WHEN-TAB-PAGE-CHANGED-Trigger to handle the change of a tabpage. And here, before you navigate to another tabpage, you can use the built-in ENTER to start the validation before the next tabpage is displayed.+When-tab-page-changed runs AFTER the tab page has switched. If you run validation from it, you will need to check if the validation failed, and then go back to the prior tab page.
Also, the Validate built-in is a better method to cause validation to occur.

Stack Canvas Horizontal Scroll Bar

Hi There,
I'm using Forms 6i (Rel.2) and i am facing a problem with may stack canvas's horizontal scroll bar at runtime, as follows:
As I put the cursor on an Item inside the stack canvas, and try to scroll away to the left where that Item is no longer viewable, and then stop scrolling, the scroll back will jump back to that Item,so I have to press and hold the mouse on the scroll bar as long as I need to see other Items at the far end! I tried to set the "Raise on entry" property to "YES", but no success.
I tried the same in Forms 5 and it works fine with no problems at all!!!
Any suggestions?

Hi,
My colleague found out that a timer I had programmed in a calling form to show the current time was actually refreshing every one second and in doing that it was refreshing the whole view which caused it to jump back to the first item. I had to remove the timer and it's working fine now.
Thanks again,
Ali

Open form in a stacked canvas

Hello all,
I have a content canvas which has a stacked canvas on it. the content canvas i want to use as background and there will be buttons to navigate through different forms and have those forms called on the stacked canvas. Can u please tell me how to go about doing this. thanks

no they're just buttons which calls different forms..

How to show additional items in the same window using stacked canvas

How to show additional items in the same window using stacked canvas.
My content canvas has 14 items, and I have to include more.
I want to know how I can use a stacked canvas to show these additional items in the same window, so that I can scroll through horzontally , as if all the items are on one canvas.

Well, I intially navigate into my content canvas. At this stage the stacked canvas is not visible, then how should I navigate to an item on the stacked canvas to make it visible?

Calling stacked canvas

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