Re: [Xbae-discuss] vertScroll Warning

[Terry L. T. <te...@es...>]

James:

My particular implementation of the widget doesn't provide a mechanism 
for the deletion of a single row. I will try your code on my release of 
the widget to see if I get the same error. I'll let you know.

Williams, James P wrote:

> > Greg Shebert identified the cause of this problem. I was setting 
> XmNrows
> > to zero upon creation of the matrix widget. After setting it to a value
> > of one, the error disappeared. Thanks Greg...
> >
> > Terry Lee Tucker wrote:
> > > I downloaded Xbae-4.9.13 and compiled for use with my current 
> project.
> > > I am getting the following warning when I use the arrow key to scroll
> > > down the list and the scrolling operation tries to go past the last
> > > item in the list:
> > > Warning:
> > >    Name: vertScroll
> > >    Class: XmScrollBar
> > >    The specified scrollbar value is greater than the maximum
> > >    scrollbar value minus the scrollbar slider size.
>
> I'm getting the same warning from the program below.  It occurs when I 
> hit the Delete button, which just deletes the top row from the 
> matrix.  Setting XmNrows to 1 doesn't get rid of the warning.  I'm 
> using Xbae 4.9.11 on an SGI running IRIX 6.5.
>
> Are there any workarounds or fixes?  Thanks for any help you can 
> provide, and thanks for such a useful widget.
>
> Jim Williams
>
>
> #include <X11/Intrinsic.h>
> #include <Xm/Xm.h>
> #include <Xm/Form.h>
> #include <Xm/PushB.h>
> #include "Xbae/Matrix.h"
>
>
> void deleteCB(Widget w,XtPointer clientData,XtPointer cbs)
> {
>    Widget m=(Widget)clientData;
>    if (XbaeMatrixNumRows(m)) XbaeMatrixDeleteRows(m,0,1);
> }
>
>
> void main(int argc,char *argv[])
> {
>    String a[]={"red","green","blue"};
>    Widget t,f,b,m;
>    XtAppContext context;
>
>
>    t=XtVaAppInitialize(&context,"mtest",NULL,0,&argc,argv,NULL
>       XmNtitle,"Motif Test",
>       NULL);
>
>    f=XtVaCreateManagedWidget("form",
>       xmFormWidgetClass,t,
>       NULL);
>
>    b=XtVaCreateManagedWidget("Delete",
>       xmPushButtonWidgetClass,f,
>       NULL);
>
>    m=XtVaCreateManagedWidget("matrix",
>       xbaeMatrixWidgetClass,f,
>       XmNcolumns,1,
>       XmNvisibleRows,5,
>       XmNhorizontalScrollBarDisplayPolicy,XmDISPLAY_STATIC,
>       XmNverticalScrollBarDisplayPolicy,XmDISPLAY_STATIC,
>       XmNtopAttachment,XmATTACH_WIDGET,
>       XmNtopWidget,b,
>       NULL);
>    XbaeMatrixAddRows(m,0,a,0,0,sizeof(a)/sizeof(*a));
>    XtAddCallback(b,XmNactivateCallback,deleteCB,m);
>
>    XtRealizeWidget(t);
>    XtAppMainLoop(context);
> }
>

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