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Scaling Questions

Created by: dwilder at: 2/9/2006 2:05 AM (12 Replies)

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2/9/2006 2:05 AM	Rate (0)
dwilder Posts: 58 Rating: (4)	Greetings. I have some questions related to run time scaling of objects. We have some objects that are not scaling when the outer window is resized by the user during run time. The objects fall into two categories. We have included some items from the Siemns HMI Symbol Library into our graphic (e.g. "Cooling Tower 2"under Process Cooling). This object scales fine, until we tried to customize it. We customized it to add left and right click events. Once we had done this, the item no longer scaled. The object height and width and top and left location remain fixed on the picture causing the item to disapear as the rest of the items on the picture are scaled.. The other scaling problem relates to a third party control that we have included in a subwindow. The subwindow gets scaled, but we have not found a way to get the control to scale. We know that these third party Active X controls will not scale through WinCC directly, but we were hoping to do some manual scaling based upon either a piicture cycle or some other event. For both of these scaling problems we were thinking we could get around the problem if we could get the width and height of the outer window that the user is resizing. It is not good enough to get the height and width of the parent object, as those remain the same (at the measurements that they were defined as) even though the window size is changing. That is the ".parent" attribute only returns the height and width of the picture object - not the height and width of the window. If there are ways to get the outer window height and width then we hope to be able to use this information to manually scale these objects that re not scaling. We are sure that others must have run into this same problem and have developed their own work-arounds. We are running WinCC 6.0 SP3. Thanks in advance. Dan
dwilder Posts: 58 Rating: (4)
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2/9/2006 9:52 AM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	Hi Dan One trick to get objects such as ActiveX controls to scale is to place them in a PictureWindow object with the Adapt Picture property set to true. If youset thePictureWindow's Border property to false it is not apparent in runtime that you have multiple windows open. I don't know 100% if this will work for your scenario but please give it a go. Regards, Salma

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2/9/2006 10:38 PM	Rate (0)
dwilder Posts: 58 Rating: (4)	Hi Salma, Thank you for your reply. That did not work. This is similar to what I had done with our other third party control. Although the picture window scales correctly, the contents of the window does not scale. As the overall window is shrunk in size, the portion of the object that is displayed in the picture window changes. For example, if the main window size is made to be half as tall then the picture window is scaled correclty to also only be half as tall, but only the top half of the object in the picture window is shown. Dan
dwilder Posts: 58 Rating: (4)
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2/10/2006 9:47 AM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	Hmm, that's strange. Can you post the PDLs that demonstrate the problem here?

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2/10/2006 10:05 PM	Rate (0)
dwilder Posts: 58 Rating: (4)	Hello Salma. When I made my original post I was running WinCC 6.0 SP 2. I have now performed the same test on a system running WinCC 6.0 SP 3.SP 3 corrects the scaling problem of customized objects from the Siemens HMI Library. However it introduces a new problem. I customized the objects to add left and right mouse button events. With SP3 theseevents are not getting fired in run-time. That was the whole reason we wanted to customize the objects. With SP 2 the events worked, but scaling did not.Are these objects not intended to be customized in this manner? My other general problem concerning scaling of third party controls and how that might be accomplished remains unresolved with SP 3. For example, consider a simple control such as the WinCC Digital/Analog Clock. If that object is inserted on to the screen and the Analog propery is set to "No" then the clock will only display the Digital time (in the form "2/10/2006 12:29:12 PM"). I have not found a way to scale this item. (To get around this problem we have created a text tag that we have set up to contain the time and we display the text tag on the screen.) Scaling the Digital clock is a similar problem to scaling other third party controls. I have tried putting the control, including the clock, into a small picture window that has Adapt Picture enabled, but that has not made any difference in the scaling. Again, I was thinking if there was a way to determine the actual size of the main display window that I could manually scale these objects. Or perhaps there is some other way? I have attached a sample PDL file that has three items.The Digital clock, one un-customized Siemens cooling tank and a second customized tank. Dan Attachment scaling.zip (798 Downloads)
dwilder Posts: 58 Rating: (4)
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2/14/2006 11:24 AM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	Hi Dan Very quickly ... The Siemens HMI Library objects are ActiveX controls and therefore yes, they may have issues being rescaled. All ActiveX controls are effectively mini programs running within your WinCC picture. They have (usually)been developed by third-party developers. As there are no standards for ActiveX controls, the developer can do as he wishes and does not have to guarantee full functionality for every eventuality. Unfortunately, accuratescaling is one of those things that most ActiveX controls I have seen fail to implement. One workaround for ActiveX controls is to export them to EMF file and then reimport them as native graphics. You will lose all the features of the ActiveX control but you will get a collection of native WinCC objects that comprise the object that you can fully manipulate.. Regarding the Digital / Analog clock, why not just change the font size on the control. Remember to do this using the controls properties and not WinCC's ! So double-click the clock, go to the Font tab and change the size. You can then proportionately resize the object to display the full date / time. I hope this makes sense. I will take a look at the screen you posted and see if I can see anything that would be helpful. Regards, Salma

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2/14/2006 4:32 PM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	I notice that you have made your customised object from the Siemens HMI symbol, i.e. an ActiveX control. As I mentioned earlier, this can cause the problems. Of course this does not mean that ActiveX controls are bad, just that they can be troublesome if you try to modify their default behaviour. I converted your graphic to native WinCC graphics and made the customized object. This recognises the mouse events correctly. This is a simple workaround but may not suit your needs. Attachment scaling.zip (705 Downloads)

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2/14/2006 7:39 PM	Rate (0)
dwilder Posts: 58 Rating: (4)	Salma, Thank you very much for the Export/Import work-around. That will certainly help with the graphics objects that we want to modify. Regarding the clock, that was just meant as an example of a control that does not seem to scale correctly at run-time. That is, as the screen size is changed, the object's size (in this case the font size) is not being scaled. My question though was more of a general one, and wondering if there was a work-around to this problem. For these cases we cannot export the control and re-import it as we would lose its functionality.One possibility would be if I could get the outer dimensions of the window at run-time, then I could scale the control at run-time based upon changes in the size of the window. For example, if we design thewindow as 1600 x 1200 and then in run-time the user resizes thewindow as 1200 x 900 then I would like to be able to get these new dimensions. Or perhaps there is some other trick? Thanks again, Dan
dwilder Posts: 58 Rating: (4)
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2/15/2006 9:44 AM	Rate (0)
Salma Gold Member Joined: 9/27/2005 Last visit: 11/27/2007 Posts: 1398 Rating: (151)	I can see no easy way. Does anyone have any ideas? You can get the dimensions of the window using .Height and .Width of the Screen object. You can even get the dimensions of the parent picturewindow if necessary. In the attachment you can see that I have used event scripts on the picturewindow to resize objects within it. However this is not very elegant as the object names have to be hard-coded. Also my tests with the clock control show that simply resizing the object doesn't work as you also need to change the font size ! This could be true of other controls too. I think this requires a fresh perspective. Has anyone else run across this problem? Attachment scaling.zip (631 Downloads)

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2/22/2006 1:49 PM	Rate (0)
ruud Regular Member Joined: 2/20/2006 Last visit: 9/25/2024 Posts: 3 Rating: (0)	Hello Salma, When I started to read this issue I hoped to find also an answer to out problem. But until know I didnot find a solution. We want to show a trend-control in a popup-picture. The operators asked if it is possible to resize onlize the trend-control and pop-up picture. I figured out that it is possible to rescale the pop-up picture and the trend-control separately, but I would like to rescale the trend-control automatically when rescaling my pop-up picture. Is is possible to capture the height and width of the pop-up picture online? It didnot work with the .height and .width property! Is there an other solution possible (or workaround)? greatings Ruud

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