Content canvas

Not sure if I'm using Canvas appropriately.
I have a tab canvas that works. I want to have a placce above it to put search criteria that the user can select, which will then query the tab canvas block.
I created a content canvas , placed it above the tab canvas, and addedd a text item to it, but when I run the form, the area for the content canvas is green (not white as I designed it) and there is no text item.
I tried altering the stacking order, changing primary canvas of window.
No luck.
Please help.
I'm new at this, so bear with me.
Thanks

sorry probably I did not understand what you need.
do you need them visible all the time?
if yes - make content canvas big enough to have tab canvas
on it, make sure that content canvas is set as primary canvas in your window's property;
open content canvas go to menu "view"->"stacked views" and select your tab canvas - arange it's position properly - it should not hide any visible items placed on content canvas, hope this helps.
"How can they both display while the focus is on the Content"
tab canvas is somehow similar to stacked canvas it could be displayed on top of content.
regards.

Similar Messages

Content canvas problem

Dear All
In forms 10G i have one Content canvas and one Stacked canvas . While designing the form i am aligning the stacked canvas on content canvas.
I follow this steps:-
1) Open Content canvas then in tool ball i click on VIEW then STACK VIEWS .
2) Then it will open a pop up window STACKED/TAB CANVAS and there i am selecting my Stacked canvas name.
3) But after that when i want to open only the content canvas then this stacked canvas also opening ..
And i am not able to hide that ...
How to do this ?

1) open content canvas
2) Click in menu "Stacked Views" (popup window is opened)
3) unselect your stacked canvas using CTRL+click

Stacked canvas view placed on the content canvas

Hi to all,
i am developed a one form ,i.e placed the stacked canvas view on the content convas.
i create a two data block's with same table.
one data block for content canvas and one for stacked canvas.
in the content canvas i taken two fileds with scroll bar and remaining fields placed on the stacked canvas.
these stacked canvas view put on the content canvas.it dispalying and
executed succesfully.
here i am getting one problem i am displying the 10 records at a time in both canvases.my requirment is placed on the
cursor on the content canvas particular record scroll down then automatically show the same record details in stacked canvas and
content canvas scroll bar is changed automatically stacked canvas scroll bar is changed.
any one help me.........

{quotei create a two data block's with same table.
one data block for content canvas and one for stacked canvas.{quote}
This is not necessary. Just create one data block and then assign the block items to your Content and Stacked canvases. You can display items in a data block on different canvases. By doing this, there is no need to write code to synchronize the records because they are part of the same data block so they will automatically scroll as you navigate through your records.
Craig...

Tab canvas on a content Canvas

Hi,
I need to put a tab canvas on a content canvas in 10g R2.
and have items from the same data block distributed across the canvases.
I have set them up with the appropriate viewport for the tab canvas, but at runtime, the tab canvas does not appear untill an item on it gets the focus.
Both canvases are set to the same window.
I'm sure this is possible and I think I have done it before but for some unknown reason can't seem to remember how !.
Thanks in Advance
Regards,
Tony Garabedian

Hi Steve,
Yup, it is definitely related to the window, if the window is the form's console window and the window is the first window created in the form (default window created with the first canvas mostly WINDOW1) the tab canvas is behaving in that way.
Create a new window and make sure that this window is not the console window and the behavior is very much normal, the tab canvas appears as soon as the window gets focused.
This what I have found out for now, if later testing shows anything else I'll post the results.
Regards,
Tony Garabedian
I just added a stack canvas on that same window and the problem returned....
So I rearranged the canvases, and purposely set the canvas on the console window, it worked, so now it seems that the problem appears if you have a stacked canvas AND a tab canvas on the same window.
Hope this ain't a bug it sure looks and acts like one though.
Message was edited by:
Tony Garabedian

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

Displaying tab page canvas on content canvas in Forms 6i

Forms [32 Bit] Version 6.0.8.8.0 (Production)
I have an existing form which has multiple canvases and there are couple of fields on Content canvas and then on the same content a Tab canvas is layed out. I can see both canvases in same layout editor and select and move the tab canvas.
But when I create a new form and want to layout a tab canvas on top of content, it appears in a separate layout editor window on design time.
I want it like below:
-----------content--------------------
|                                       |
|                                       |
|                                       |
|TabPag1     TabPage2                   |
|                                       |
|                                       |
|                                       |
|                                       |
|                                       |
|                                       |
-------------content------------------How can I create it so that it appears in same layout editor window at design time and appears in same window like one canvas on runtime.

In order for the Tabbed Canvas to appear on the Content Canvas in the Layout Editor, you have to actually draw the Tabbed Canvas on the Content Canvas; eg: open your content canvas in the layout editor, click on the tabbed canvas toolbar button and then draw it on your content canvas. If you create the Tabbed Canvas object through the Object Navigator and then set the properties so it would display on the content canvas - it won't be visible on the content canvas with the layout editor.
This is a bit of a quirk in the Forms Builder and they haven't corrected this in any of the newer versions of Forms yet. :-(
Hope this helps,
Craig B-)
If someone's response is helpful or correct, please mark it accordingly.

(another) stacked canvas on content canvas problem

I've searched the forums for the last 2+ hours and can't find a solution for my problem, although there are hundreds of questions on this subject.
I have a stacked canvas on top of a content canvas. The canvases share the same window. They also share a data block. I added radio buttons on the main canvas to "show/hide" the stacked (my ultimate goal is to have 2-3 stacked and toggle. When hide, the stacked canvas is hidden, but when i click show, it is not. I understand reading all the posts that the block with focus will display, and I've added both a go_block and go_item prior to the show_view. Below is my code. MEL_DETAILS is content and MEL_LINE_ITEM is stacked.
IF :stack = 'SHOW_STACK' THEN
GO_BLOCK('MEL_ITEM');
GO_ITEM('MEL_ITEM.MIS_PROJECT_NO');
SHOW_VIEW('MEL_LINE_ITEM');
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_true);
SET_VIEW_PROPERTY('MEL_LINE_ITEM', display_position, 718, 583);
SET_ITEM_PROPERTY('PROJECTS.STACK',MOUSE_NAVIGATE,PROPERTY_FALSE); -- radio button
ELSif :stack = 'HIDE_STACK' THEN
HIDE_VIEW('MEL_LINE_ITEM');
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_false);
SET_ITEM_PROPERTY('PROJECTS.STACK',MOUSE_NAVIGATE,PROPERTY_TRUE);
END IF;

user12198246 wrote:
I've searched the forums for the last 2+ hours and can't find a solution for my problem, although there are hundreds of questions on this subject.
I have a stacked canvas on top of a content canvas. The canvases share the same window. They also share a data block. I added radio buttons on the main canvas to "show/hide" the stacked (my ultimate goal is to have 2-3 stacked and toggle. When hide, the stacked canvas is hidden, but when i click show, it is not. I understand reading all the posts that the block with focus will display, and I've added both a go_block and go_item prior to the show_view. Below is my code. MEL_DETAILS is content and MEL_LINE_ITEM is stacked.
IF :stack = 'SHOW_STACK' THEN
GO_BLOCK('MEL_ITEM');
GO_ITEM('MEL_ITEM.MIS_PROJECT_NO');
SHOW_VIEW('MEL_LINE_ITEM');
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_true);
SET_VIEW_PROPERTY('MEL_LINE_ITEM', display_position, 718, 583);
SET_ITEM_PROPERTY('PROJECTS.STACK',MOUSE_NAVIGATE,PROPERTY_FALSE); -- radio button
ELSif :stack = 'HIDE_STACK' THEN
HIDE_VIEW('MEL_LINE_ITEM');
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_false);
SET_ITEM_PROPERTY('PROJECTS.STACK',MOUSE_NAVIGATE,PROPERTY_TRUE);
END IF;Here, it seems two problem..
The line..
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_true);
and
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_false);No needed
Hope this helps
Hamid

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.

Display employees details in the stacked canvas from the content canvas

Hi all,
       I want to display employees details in the stacked canvas from the content canvas,where i passed the empno & click on the find button , i have 2 blocks(emp,control), in control block only find button there, I have only one table i.e;emp
BEGIN
    GO_BLOCK('EMP');
    Set_block_property('EMP', default_where, 'Empno = :EMP.EMPNO');
     Show_view('EMP_DET_CAN');
    execute_query;
END;
Thank You

Hi Andreas Wieden,
Andreas Weiden wrote:
When you query on the EMP-block, yiou cannot include a WHERE-condition to that block as the block is cleared when the EXECUTE_QUERY starts. If you want to have a different find-block where you enter your search-condition, you have to include that item in your separate find-block. Otherwise use the standard-search-mechanism with ENTER_QUERY and EXECUTE_QUERY.
You are right, so where clause is not possible in the same block, right?.I have to take empno column where it is a search column into the control block right?
Please suggest me i want to retrieve records into the stacked canvas when i pass the empno & click on the find button in the content canvas? Is this not possible? If possible please let me know? I mean i want to take the search column in the EMP Block & find button in the control block..
Thank You

How to change Content canvas size during run time?

Hi All,
I am using oracle 10g web forms and opening in Separate Frame. When I re-size the MID window, I want to change Content canvas size to window size. Is it possible to change content canvas size at run time? Even after using following statement it is not working.
set_canvas_property('content_can', WIDTH, 200 );
set_canvas_property('content_can', HEIGHT, 100 );
Please help me.
Regrads

Francois,
Yes, I have used messages, when get the current values (after setting new values) it shows right one but on the screen it is not accurate because
it is going beyond the window size and it adding scroll bars. I am using window W&H minus some numbers. When I look at the help it says size in characters. How to set the Content canvas size in characters?
Is it possible to change the Content Canvas size in Run time? Please help me.
Regards.

Stacked canvas is overlapping the content canvas

Hi all,
I am writing a program where I have one content canvas and a button to display the stacked canvas on button click. But when I run the form, 'only' the stacked canvas is showing-up even though I have hidden the stacked canvas in the on-new-form trigger.
Can anybody please shed some light.
Thanks,
Naren.

Hi,
Assuming you have two or more datablocks:
On the object navigator, move up (drag-drop) the datablock shown on the main canvas, so it apeears first.
OR
Open the Forms properties and set property: "First navigation data block"
Regards,
Hugo.

Stacked canvas in content canvas desapears when post_query

Hello.
I have a content canvas and i draw a stacked canvas into content canvas. I want a horizontal scroll in stacked and a vertical scroll bar in the content. In stacked canvas, i placed a base table data block. In when-form-instance, i have a comand SHOW_VIEW of stacked canvas.When i execute_query, the stacked canvas desapears. I don't understand why...
This is Developer 10g
Please help me.
Best Regards

I have seen that too, with tab canvas, which is like a stacked canvas.
On mine, it occurs after a clear_form and synchronize, but before I execute any queries (there are multiple blocks and queries).
So what I added was this, following the Synchronize:
Declare
Tab_View_id Viewport := Find_View('TAB');
Begin
if get_view_property(Tab_View_id,Visible) = 'FALSE' then
show_view(Tab_View_id);
end if;
End;I actually put the Tab_View_ID variable into a package spec, so Forms only needs to set it once.
If you can't find the right place to add the code, a form-level when-new-item-instance trigger will work.

Content canvas to stacked canvas for scroll bars

I have a form which has more items. Initially I developed the form with content canvas(this has vertical scroll bar). now I changed this canvas to stacked canvas to get horizontal + vertical scroll bar. But I am not able to do it. Can any one please advice me how to achieve. Basically I need horizontal + veritcal scroll, so that user can easily scroll it.
Appreciate your help.
Thanks in Advance!!

Hi
This is a common task in Oracle Applications forms, the steps would be:
- Put the context, fixed fields on content canvas, to the left of the window
- Modify the block to show vertical scroll bar, display it on content canvas, to the right of the window
- Accommodate remaining fields on stacked canvas, all of them from 0.0 to the right.
- Modify stacked canvas viewport size and position to be shown in the space between the fixed fields on the content canvas and the vertical scrollbar on it, allow for space to the horizontal scrollbar
- As Craig's answer states, modify stacked canvas property to show horizontal scrollbar

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...

Image map on a content canvas?

Hello,
Has anyone had success creating an image map using a Content Canvas Portlet Template?
for some reason, i can only get the image to show, or the outline of the map.
I opened up the template and put all the code in the html area (where you can add html like a text editor(the toggle layout/source view - used the source view)
Help?
Computers are like Old Testament gods; lots of rules and no mercy. ~Joseph Campbell

When i'm not been able to get the right size i will add a pre-form-trigger and resize the object at runtime. It's saves me a lot of time instead of trying to instruct the generator to do so.
I'm always using the pre-form-trigger and not the when-new-form-instance-trigger because Headstart will do the initialization after the pre-form-trigger is fired and so it's taking the changes made in the pre-form-trigger into account.

Canvas becomes too big when generating tabs on a content canvas

I want to generate the following layout:
<New content canvas> block 1 height 15 width 80
prompt: field
prompt: field
<New tab canvas page> tab 1 height 31 width 80
Multirecord block which is a detail of block 1
<New tab canvas page> tab 2 height 31 width 80
Also MR block which is a detail of block 1
Window height 46 width 81
Problem is that the height of the tab canvas pages becomes 46 and not 31, so the height of the window becomes 61. I've tried several options, als with view height and width, but it is always reproducable and wrong. And with every module I build with the same sort of layout.

When i'm not been able to get the right size i will add a pre-form-trigger and resize the object at runtime. It's saves me a lot of time instead of trying to instruct the generator to do so.
I'm always using the pre-form-trigger and not the when-new-form-instance-trigger because Headstart will do the initialization after the pre-form-trigger is fired and so it's taking the changes made in the pre-form-trigger into account.

Content canvas

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