manu@ORC.OLIVETTI.COM (Manu Das) (06/13/90)
I have a small app with couple of text widgets and command buttons. One of the command button pops up a dialog box. Before the dialog box is popped up, the text widgets accept input. I can enter/edit text without any problem. But after the dialogbox is popped up and down the text widgets stop accepting any inputs. I don't see any connection between the two. Can you help me? Also, I would like to use a toggle widget. But it seems that Chris Peterson has mentioned in the code for Toggle.c that actions = SuperClass->core_class.actions; does not work. So, he has exported the action table of command widget. Is there any alternative to what Chris has done. Has it been fixed in release 4? I was told that toplevel shell can have only child, but it seems to me that the popup shell is also a child of toplevel. Am I wrong? Suppose I have a cmdBtn which calls XtPopup ,to popup a dialog box with done and cancel buttons,in it's callback function. In the DialogDone or DialogCancel function, is it possible to find out the name of that cmdBtn? Thanks a LOT. Manu Das email address: manu@orc.olivetti.com
kit@EXPO.LCS.MIT.EDU (Chris D. Peterson) (06/13/90)
> text widgets stop accepting > any inputs. I don't see any connection between the two. Can you help me? I have seen this behavior in R3, it seemed to be an interaction between Xt and the window manager's focus management stuff. I believe that this was fixed in R4, however. If you are running R4 and still having the problem, send me a SHORT example program, and I will take a look. > Also, I would like to use a toggle widget. But it seems that Chris Peterson has > mentioned in the code for Toggle.c that... This was necessary to allow the Toggle to override the Command's set() action. The hack I had to add is still necessary in R4, but the Toggle does work just fine. It should only affect you if you are subclassing your own widgets. > I was told that toplevel shell can have only child, but it seems to me that > the popup shell is also a child of toplevel. Am I wrong? There are two types of Children in Xt, Popup children and Normal children. Popup children are things like menus and dialog boxes. The shell can have only 1 normal child, but any number of popup children. Popup children are not managed by the geometry manager of their parent, and are not sub-windows of their parent's window. > Suppose I have a cmdBtn which calls XtPopup ,to popup a dialog box with done and > cancel buttons,in it's callback function. In the DialogDone or DialogCancel > function, is it possible to find out the name of that cmdBtn? The callback functions return the widget that caused them to be invoked (in this case the command buttons) You can retreive the name of the Command button by using the XtName() function on the widget argument to the callback routine. > Thanks a LOT. Manu Das You're welcome. Chris D. Peterson MIT X Consortium Net: kit@expo.lcs.mit.edu Phone: (617) 253 - 9608 Address: MIT - Room NE43-213