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dotnet windows forms designtime
group:detecting position of control added to CustomControl
dotnet windows forms designtime:
I've created a GridLayout control that derives from Panel.
The control works perfectly. Now I want to allow an option to set some properties of an added control based on where in the GridLayout control it is added (when dragged from the toolbox). I tried testing the Location of the control in the OnControlAdded() protected method but for some reason the Location of the controls does not match the location where it is dropped. I tried creating a simple Control that derives from Panel and testing the Location of the added controls in OnControlAdded(), and in that control Location of the controls do match the location the control is dropped. I can't understand why with my GridLayout control I have this problem. The GridLayout control has a CustomDesigner. Can It interfere with the location of the controls? Thanks
Thanks for replying so fast!
[quoted text, click to view] > If you think the CustomDesigner may affect your Panel control, I think you Tried to remove the Designer attribute, still got this problem.> may just commented out the line of attaching CustomDesigner to your > control, then if the problem still exists. I found a work around: the GridLayout OnControlAdded() method stores a reference to the added control and then in the designer OnDragDrop() I update the Controller using the X,Y properties of the dragdrop event. Now, I'm trying to support moving the controls on the GridLayout with drag and drop but I can't figure out how to get the control being moved from the DragEventArgs object. Thanks
Hi Nadav,
Thanks for your posting! If you think the CustomDesigner may affect your Panel control, I think you may just commented out the line of attaching CustomDesigner to your control, then if the problem still exists. For this issue, I suggest you paste some code snippet or a sample project without the irrespective code to help us reproduce out your issue, then we can help you better. Thank you for your patience and cooperation. If you have any questions or concerns, please feel free to post it in the group. I am standing by to be of assistance. Best regards, Jeffrey Tan Microsoft Online Partner Support Get Secure! - www.microsoft.com/security This posting is provided "as is" with no warranties and confers no rights.
[quoted text, click to view] Nadav wrote: > Thanks for replying so fast! > > > If you think the CustomDesigner may affect your Panel control, I think you > > may just commented out the line of attaching CustomDesigner to your > > control, then if the problem still exists. > Tried to remove the Designer attribute, still got this problem. > I found a work around: > the GridLayout OnControlAdded() method stores a reference to the added control > and then in the designer OnDragDrop() I update the Controller using the X,Y > properties of the dragdrop event. > Now, I'm trying to support moving the controls on the GridLayout with drag > and drop > but I can't figure out how to get the control being moved from the > DragEventArgs > object. > > Thanks > Nadav Hi Nadav, [quoted text, click to view] > but I can't figure out how to get the control being moved from the > DragEventArgs I've run into this before, what I ended up doing was using the ISelectionService to get the selected control. I hope this helps. Kind Regards, Jerron
Hi Jerron,
Thanks for answering. [quoted text, click to view] > I've run into this before, what I ended up doing was using the > ISelectionService to get the selected control. I hope this helps. > Kind Regards, > Jerron I've used the ISelectionService to get the selected control. It works, but it seems like .... Well, It just does not seem like the right way to do it... If you use drag&drop, then you should be able to get the dragged object from the Drag&Drop event. Any way, thanks for your suggestions. Nadav
Hi Jeffrey,
Thanks for your posting! [quoted text, click to view] > Does your "Drag&Drop event" refer to ControlDesigner's OnDrag*** methods? I override void OnDragDrop(DragEventArgs de) in the custom designer.> Or you implement some way yourself? if I move a control on my GridLayout control, Then de.Effect==DragDropEffects.Move and de.Data should (as I understand it) contain the Control being dragged. [quoted text, click to view] > I agree with Jerron that at design-time, the standard way of getting the It just seems odd to me to have to go and make changes to the custom control > selected object is using ISelectionService. in order to get the selected controls from it, instead of using the DrapEventArgs, that should have the information needed. But I can't get the information from the de.Data. No matter what parameter I pass to de.Data.GetData() it returns null. [quoted text, click to view] > Also, do you still have any concern on this issue? Please feel free to tell I've implemented it using ISelectionService, and it works.> me, thanks. It's just seems strange to do it like this... Thanks,
Hi Nadav,
Thanks for your posting! Does your "Drag&Drop event" refer to ControlDesigner's OnDrag*** methods? Or you implement some way yourself? I agree with Jerron that at design-time, the standard way of getting the selected object is using ISelectionService. Also, do you still have any concern on this issue? Please feel free to tell me, thanks. ========================================= Thank you for your patience and cooperation. If you have any questions or concerns, please feel free to post it in the group. I am standing by to be of assistance. Best regards, Jeffrey Tan Microsoft Online Partner Support Get Secure! - www.microsoft.com/security This posting is provided "as is" with no warranties and confers no rights.
Hi Nadav,
I agree, it does seem a little odd to use ISelectionService and it would be nice to have some type of reference passed in DrapEventArgs. [quoted text, click to view] >From what it looks like to me the drag and drop events are designed more for dragging things like text into a text box rather then acontrol onto another control. That's the only reason I can figure it's not there. However, after using ISelectionService I found it really accomplishes the same thing. Further more its a better fit when you consider what happens when you select multiple controls and drop them all on the parent at once. You mentioned having to make changes to the custom control to implement this. Are you just getting a reference to the ISelectionService in your OnDragDrop function then calling getselectedcomponents or primaryselection? I'm happy you were able to get this working. Kind Regards, Jerron [quoted text, click to view] Nadav wrote:
> Hi Jeffrey, > > Thanks for your posting! > > > Does your "Drag&Drop event" refer to ControlDesigner's OnDrag*** methods? > > Or you implement some way yourself? > I override void OnDragDrop(DragEventArgs de) in the custom designer. > if I move a control on my GridLayout control, > Then de.Effect==DragDropEffects.Move and de.Data should (as I understand it) > contain the Control being dragged. > > > I agree with Jerron that at design-time, the standard way of getting the > > selected object is using ISelectionService. > It just seems odd to me to have to go and make changes to the custom control > in order to get the selected controls from it, > instead of using the DrapEventArgs, that should have the information needed. > But I can't get the information from the de.Data. > No matter what parameter I pass to de.Data.GetData() it returns null. > > > Also, do you still have any concern on this issue? Please feel free to tell > > me, thanks. > I've implemented it using ISelectionService, and it works. > It's just seems strange to do it like this... > > Thanks, > Nadav
Hi Nadav,
Based on your feedback, it seems that you already got the workaround for this issue. But do you still have concern on this issue? If you still feel uncomfortable on this issue and need more information on it, I suggest you provide a simple project and get rid of the un-related code to help me reproduce out this issue. Then I can help you better. Thanks Best regards, Jeffrey Tan Microsoft Online Partner Support Get Secure! - www.microsoft.com/security This posting is provided "as is" with no warranties and confers no rights.
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