Question reagarding stacked canvases

Hi,
I have a problem. We have created forms in 4.5 now we are migrating to 10G. In 4.5 we have created a form that replicates Tab Canvases; but 4.5 does not have Tab functionality so we tried to do it by using stacked canvases.There are 4 stacked canvases. One of them has horizontal scroll bar. We have a trigger when mouse click which fires depending on the x and y position of the mouse (which will be similar to When-Tab-Changed trigger). This mouse click trigger works fine as long as I moved to three canvases which do not have horizontal scroll bar. Once I click on the forth canvas that has Horizontal scroll bar, I cannot leave the canvas. My mouse click does not fire any more after I enter into the forth canvas that has Horizontal scroll bar. So, I removed the h.scroll bar and it works fine. Does any one have any idea how to solve this.
Very urgent. Need help please.
Thanks in advance.

I'm not sure whats causing the problem you describe, but it wouldn't take long to actually replace the 4 stacked canvases with a tabbed canvas, it might be quicker to do that than to try and figure out the problem you are experiencing.
I'm not sure if you've used the stacked canvases before but they are really simple.

Similar Messages

Content, Tab & Stacked canvases contd...

I posted a question in the last week about putting a stacked canvas (say S) on a tab canvas(say T) and both of them on a contenct Canvas (say C). I was able to do that with valuable suggestions from gurus here.
Now my issue is as follows:
On my stacked canvas there are items from 3 different blocks (say B1,B2 & B3)along with scrollbars. This stacked canvas appears in the 1st tab of the tab canvas T. The form, now appears as if there are 2 sections: The top portion has items(store, city, state) belonging to STORE block. Bottom portion are the tab/stacked canvases.
I set the block STORE's navigation style property to 'Same Record'. The idea is when the user keys in a store (store field) or selects a store from the drop down list of stores, it should navigate to the next text item 'city'. However, it is not navigating to 'city' eventhough that is the next item in that block. I have a when validate item on the 'store' text item. Can I use "Go_ITEM('STORE.city')" in that WVI ? If not, then how do I make it navigate to the 'city' text item?
Thanks,
Chiru
Edited by: Megastar_Chiru on Dec 28, 2009 4:44 PM

There are three ways (at least i know of three) to manage navigation from one item to another one:
- If navigation should take place "inside" a block from one item to another one, put them in the appropiate order in the object-navigator. Also make sure, that the "destination item" has its Keyboard navigable property set to true.
- If navigation should take place "inside" a block from one item to another one, but you can't use the order in the object-navigator, use the properties "Next Navigation Item" and/or "Previous Navigation Item" at itemlevel to control the navigation.
- If navigation is conditional or should go to items in other block, use the KEY-NEXTITEM and KEY-PREVIOUSITEM-triggers and do a GO_ITEM('DESTINATION_ITEM'(; in it

Stacked canvases - best settings for Visible / Raise on Entry

Hello,
I'm currently migrating a Forms 6i client-server application to 10.1.2.0.2 WebForms. I'm familiar with the advice that, to minimise network traffic, tabbed canvases should be changed to use stacked canvases with Visible=No, Raise On Entry=Yes. That way, tabs other than the first one don't get loaded into memory unless you actually go to them.
My question is - does this apply to stacked canvases in general? I have a number of forms with quite a few stacked canvases that get called up depending on user actions; the code calls up the canvas by doing a Go_Item. These stacked canvases are generally all set to Raise On Entry=Yes, but Visible=Yes. Would setting Visible to No give me a performance improvement? (I know, it depends on the application, but in general...) If I do set Visible to No, would I have to add code to change Visible back to Yes when the application goes to an item on the canvas, or will that be handled automatically by Raise On Entry..?
Thanks in advance,
James

Hi Gerd,
Thanks for replying. So when you say 'HIDE=Yes', I presume you mean the 'Visible' property on the Canvas? (Looking in my Forms Builder, there's no 'hide' property on canvases - unless I'm being really dim...)
I do have some fairly large forms with a lot (> 8) stacked canvases, so I may need to consider changing those to hidden - although if it involves extra coding, I might wait to see how performance looks once the application is fully up and running. The tab canvases I have tend to be fairly simple so I'll leave those alone.
I'd be really interested to hear of anyone else's experiences of how multiple canvases affects performance.
James

Tabs and stacked canvases ...

Why are tab canvases effectively implemented as stacked canvases? It seems crazy that you have to first create a "content" canvas (which will never have any items placed on it) on which to display your tab canvas!
I want to create the layout where I have a stacked canvases (scrolling spread table) positioned on one of my tabs. As a stacked canvas is attached to a "window" there appears no way to tell forms that this stacked canvas applies to say the first tab! So when I go to the second tab, the stacked canvas is still visible!
Do I have to write canvas manipulation code to manage this?? Am I going to get it to work??
It all appears like the forms group has taken a quick (and dodgy) approach to "finally" implementing native tab functionality! (even the case tool won't generate this layout)
I shouldn't have to write code to do this!

Hi ,
Did u ever get any answer from the Forms - group? I am having problems with stacked item groups displayed on a tab page. Mouse navigation on that same tab page or even shift-TAB results in dissapearance of the stacked item groups.
Can U help?
Greets Aschwin

Hidden stacked canvases blink

Hi!
I have Forms 6i and I have a program with 3 tab pages. On the first tab there is master data block, the second and the third tabs are detail blocks. On both second and third tab I have two stacked canvases, let's name them can21, can22 (on the second tab page) and can31, can32 (on the third tab page).
I used show_view and hide_view commands to show/hide stacked canvases as needed. But when I am on the first tab page and when I, after executing a query, go to the next (or previous) record, when I reach a record which contains some data in detail block on the third tab page, canvases can31 and can32 appear. I hide them on when-new-record-instance, but at first, they blink for a moment and then disappear.
Any idea how to avoid that blinking?
Tnx in advance.

Debugger showed my error. I had show_view commands for can31 and can32 on POST-QUERY trigger on detail block for third tab page and that caused blinking. I thought in one moment I needed those commands, but I see now they are sufficient.
Tnx a lot!

Help! - Stacked canvases disappear

Using Forms 6.05. Have content canvas with 2 stacked canvases which I want visible at all times. Have 2 large data blocks requiring horizontal scrollbars on the stacked canvases. Have put the identifier column from each of the data blocks on the content canvas so they remain static and visible while the user scrolls horizontally thru the remainder of the data blocks. Have also put the vertical scrollbars for the data blocks on the content canvas so they too remain static and visible when scrolling horizontally. PROBLEM: When content canvas 1st displays, stacked canvases are visible and data blocks are populated. If the first user action is to manipulate the scrollbar, the stacked canvases disappear. However, if the user clicks on a data block item first and then manipulates the scrollbar, the stacked canvases remain visible. HELP! I can't figure out what is happening and how to fix it. Any info is appreciated.

The canvases have to be ordered in the Forms definition in the order they overlap each other on the screen, i.e. content canvas, stacked canvas, stacked canvas.
Use show_view and immideatelly go_block built ins, where the block is a block from the stacked canvas.
The items shown on the stacked canvases have to be separated in different blocks, where you have to declare the scrolbares.
Joseph
null

Calling stacked canvases from tab pages

Hi,
I am creating custom forms from TEMPLATE.fmb in Forms Developer 6i. The main form has various tab pages on a tab canvas for different functionalities. Now, I have some very large stacked canvases which I want to be called by clicking on a tab. Most of the tab pages fit in the given dimensions for the tab canvas but the bigger ones are a problem. Please help me in trying to link those canvases with the tabs on the canvas.
Thanks.
[email protected]

Use When-Tab-Page-Changed trigger.
If :SYSTEM.TAB_NEW_PAGE = 'TAB1'
then
show_view('view_on_tab1');
elsif :SYSTEM.TAB_NEW_PAGE = 'TAB2'
then
show_view('view_on_tab2');
end if;

How to change content/stacked canvases to tabs

Hi all,
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 have about 10-12 canvases, 1 being content and the rest being stacked). I now want to make all those canvases as tab canvas so that it can be very easy going to any canvas. Right now, at runtime, if I'm on the 8th canvas and need to make some changes in the first canvas, I have to click on the back button all the way till I reach the first canvas. So I desperately need to change my canvases to tabs.
Can you guys please give me a detailed instruction on how to convert my content and stacked canvases to tab canvases. I have never worked on 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 to all in advance.

Thanks for replying. I just need to move the items to the new tab canvas but everything else would be the same, right. I mean, will I need to write new codes? Can you point me to any documentation on this. Thanks.

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 9i Compatibility - Stacked Canvases

I'm currently working on a forms screen that implements a horizontal scrollbar using stacked canvases and multiple viewports all within the same window.
My boss wants to make sure that this form would be easily migratable to Forms 9i (from Forms 6i) when we eventually switch.
Is there a cause for concern? Has anyone used stacked canvases on Forms 9i with horizontal scrolling?
Thanks,
Gio - [email protected]
Giovanni Jaramillo
AMGEN Inc. - Sales & Marketing Information Systems
Thousand Oaks, CA 91320-1799

Hi Giovanni,
I have a form that implements one stacked canvas with one viewport (horizontal scrolling) all in the same window.
It works fine but for one strange problem,
when the form is run and you click on any item on the stacked canvas, the whole viewport becomes blank.
I am at a loss why. Haven't reported it though since i have been a bit pre-occupied with other things but now is as good a time as any.
Thanks for bringing it up.

Question about stacked canvas disappearing

Hi,
I have a block which has some database items and non-database items. Since
there are many items in the block, I use a stacked canvas with horizontal bar
to display the less important items.
In the trigger of new-block-instance, show_view('stacked_canvas')
But I face one problem. When I click on a non-database item and then move
the cursor away from the item, the stacked canvas suddenly disappears.
Any idea ?
Many thanks in advance

Imagine each canvas as a piece of paper stacked on a desk. Each piece of paper possibly has a different size and the top left corner of each piece is possible oriented in a different spot. When you say show_view('stacked_canvas') its like reaching to the bottom of the pile and putting that canvas top. When you click on an item not on the stacked canvas that items canvas is placed on top. Your problem is that your non-database item content canvas is covering up the stacked canvas. I think...
Your issue could be solved by simply rearranging the canvas order by putting the stacked canvas last (I think) in the object navigator.
Raise on Entry could also be causing your issue. Go to the help. Click the search tab. Type "raise on entry". Read "Working with the Raise on Entry Canvas Property". There is a good explanation in there on how stacked canvases get covered up by content canvases and when.

Question on stacked sequence

Hi,
I have a question regarding stacked sequence.
I have a stacked sequence with 5 sequences (0,....,4). I would like to execute these in this form
0, 1, 2, 1, 3, 1, 4, 1 then again 0,..
I don't want to duplicate the 1 section since it contains many objets, variables,...One possibility would be to move out the objects then duplicate the sequence and use shift registers but I don't want to use this because in 1, I have some real time graphs to plot..
Is there another (easy) way to do this ?
Thanks for ideas,
Regards
Solved!
Go to Solution.

nitad54448 wrote:
I have a question regarding stacked sequence.
Sequences MUST execute in order until all frames are complete, and there is no escape. Don't use stacked sequences, they are too limiting.
nitad54448 wrote:
I don't want to duplicate the 1 section since it contains many objets, variables,...
You don't need to duplicate it. Create a simple state machine with cases 0,2,3,4 and add the code of state 1 right after the case, so it executes at each iteration of the loop after any of the states.
Here's a quick draft (LV 8.0) that would cycle through the states as you specified forever. See if it can give you some ideas.
Please show us your actual code, maybe we have a few better suggestions.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
RepeatStates.vi ‏14 KB

Question regarding stacks, searches and smart collections

Apologies if this is considered a 'basic' question - but I hope that someone can help me.
I'm currently in the process of upgrading/migrating a reasonably large Photoshop Elements 6 catalog where I've made extensive use of hierarchical folder structures, keywords and star ratings to quickly locate photos using a range a different techniques.I've successfully upgrade/migrated the Photoshope Elements catalog into Lightroom 3 and as part of the verification that everything has come across OK - I've done some comparisons of catalog searches in Elements and Lightroom and seem to be getting some strange results which I'm not sure if this is simply how things work or if I'm doing something wrong. I think part of the issue is caused by the fact that Elements always does destructive edits - so I never edited original photos in Elements so made extensive use of copied photos and stacks - but this didn't seem to cause any issues as Elements seem to keep things straight.
In Elements, the result of a query or Smart Collection might return 18 stacks of photos (with most of the stacks containing multiple photos) - but for most purposes Elements simply treated this as 18 seperate photos and simply ignored all of the photos under the top of the stacks.
Now in Lightroom I get different results depending on how the photos are identified. If I use either a keyword or rating search using the 'Right Hand' panel - I get a photo count returned which is always much higher than 18 but Lightroom seems to retain the stacks so only displays 18 different stacks, However, if I put the same search criteria into a Lightroom Smart Collection - it retrives and displays ALL of the photos in the 18 stacks (so it displays 2-3 times more photos) and I can't seem to find a way to get the Smart Collection to honour these stacks. I know that I could probably alter each of my photo stacks and change the rating or keyword of all of the photos under the top of the stack - but trust me this is a huge amount of work!!
Is this simply the way Lightroom works? I can partially understand and accept the way direct keyword or rating searches work using the 'Right Hand' panel - although the photo counts are different from what I've got used to in Elements the way the photos are actually displayed is not that different. However, what really confuses me is the completely different way Smart Collections work when compared to the 'equivalent' direct query. Have I missed something? Or is this some form of technical issue/bug/future enhancement request?
Also, on a slightly related issue - I've noticed that keywords with spaces (or other special characters) seem to cause issues for Lightroom - while Elements seems to cope with these OK. From the reading I've done it looks like one of the most common suggestions is to simply remove the spaces (..etc.) in the keywords - is that what most people would recommend??
Any help, advice or other suggestions would be appreciated.
Kind Regards .... Jerry

I'm currently in the process of upgrading/migrating a reasonably large Photoshop Elements 6 catalog where I've made extensive use of hierarchical folder structures, keywords and star ratings to quickly locate photos using a range a different techniques
Please tell us EXACTLY the steps you are using to move your PSE catalog to Lightroom.
However, if I put the same search criteria into a Lightroom Smart Collection - it retrives and displays ALL of the photos in the 18 stacks (so it displays 2-3 times more photos) and I can't seem to find a way to get the Smart Collection to honour these stacks. I know that I could probably alter each of my photo stacks and change the rating or keyword of all of the photos under the top of the stack - but trust me this is a huge amount of work!!
I believe this is how Lightroom was designed to work. Smart collections don't recognize that some photos are at the bottom of the stack.
Also, on a slightly related issue - I've noticed that keywords with spaces (or other special characters) seem to cause issues for Lightroom - while Elements seems to cope with these OK. From the reading I've done it looks like one of the most common suggestions is to simply remove the spaces (..etc.) in the keywords - is that what most people would recommend??
I have no trouble whatsoever using keywords that have spaces in them. I have keywords that are "New York", "New Jersey", "Union Pacific Railroad", etc. Special characters, such as a comma, will probably cause trouble. Exactly what are you doing where spaces in keywords are not working properly?

Newbie Question re stacks, import options, & color labels

I probably shouldn't just group together multi-topic questions, but creating a new topic for each one seemed wasteful. I'm just starting to migrate to Lightroom from PSE, so I have a few questions that I couldn't find answers to.
1. Can I change the color of the color labels? For example I find that the blue color label does not stand out very well with the gray background, so I'd like to make it a deeper blue.
2. Is there an import option (when importing from removable device) to delete the photos (automatically) after copied to disk and imported?
(yes, I know I can manually do it, I'm just lazy)
3. Is there a way to run the auto stack feature without losing already grouped/stacked photos. For example if I have photos A, B, and C and A and B are already grouped, then I run the auto stack with a time setting such that B would pick up C, I want it to add C to A and B, not create a new group with just B and C. AND/OR is there a way to run the auto stack on just the photos I have selected? I did a lot of testing and it seems like I can run it on an entire folder of photos or my entire catalog, but not just, say 20 selected photos.
4. Is there any option that I can turn on that will automatically put the virtual copy on top of the stack when I create one? (again I'm just being lazy)
Finally, sort of a general usage/workflow question .. I've done a bit of reading on virtual copies and snapshots and I still can't decide when one is better than the other ... they seem to basically have the same function - to create non-destructive copies of an original photo that can than later be exported or used. Any thoughts on how people are using them or when one is better than the other?
Thanks! Kelly

Thank you both for the answers/advice.
One more quickie, I was wondering if anyone knew how Lightroom 2 was going to be sold, ie for owners of 1.4 will it be a paid upgrade or free? I ask because I am still in the trial version of lightroom (was doing some testing to see if i wanted to stay in PSE or move to lightroom), and I have decided that I would like to move to lightroom, but there are some features in version2 that I already know I will want, so I'm debating about waiting for that release (to save money), unless it would be a free upgrade for owners of 1.4.
John - why is it better to copy from the card reader to disk then import into lightroom? Just curious as I have been doing quite a bit of research in last couple of days and it seems that a lot of people use that type of workflow (first copying to one folder on hdd, then importing, and then maybe moving later on). In PSE I used to always just use the Adobe interface to copy then import in "one step" (I say one step, but it was obvious that adobe first copied the images then imported them). Anyway I'll probably do as you suggest but just like to get into knowing exactly why I'm doing it a certain way.
Andrew - good to hear, that is actually what I had started doing, so it's good to know that it's a "proven" workflow.
Thanks!

EHP4 upgrade question - ABAP Stack and EA-HR

Hi Experts,
My ABAP stack in the ECC system is at 7.01 SP3.
My EA-HR module is at 600 SP38.
We want to upgrade EA-HR to 604 (EHP4) so that we can benefit from some of the MSS functionality but the question is, what ABAP stack level do I need to be on? Is my current version ok or do I need to upgrade?
Can anyone shed light for me on this matter?
Best,
MM

Hi MM,
You can consult SDN Wiki using the following link:
http://wiki.sdn.sap.com/wiki/display/ERPHCM/HOW%20TO%20GET%20RID%20OF%20SP%20STACK%20MISMATCH%20ISSUES
Hope it will be helpful,
Regards
Christine

Question reagarding stacked canvases

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