I have a form that displays a time vs temperature graph when the user clicks
a plot button. The plot is done in a picturebox using gr.drawline. I would
like for this plot to be made without the user having to click the plot
button, ie when the form opens.
I have tried putting the call to the plotting subroutine in various places:
the pbox.paint event, the form load event, and several other form events.
Nothing seems to work - I am not getting an error, just no graph. If I click
the button, it will still plot.
Any ideas how I might get this to automatically occur when the form opens?
Thanks
--
Mark Lancaster
4  1441 
"Mark Lancaster" <Ma***********@ discussions.mic rosoft.com> schrieb: I have a form that displays a time vs temperature graph when the user
clicks
a plot button. The plot is done in a picturebox using gr.drawline. I
would
like for this plot to be made without the user having to click the plot
button, ie when the form opens.
I have tried putting the call to the plotting subroutine in various
places:
the pbox.paint event, the form load event, and several other form events.
Nothing seems to work - I am not getting an error, just no graph. If I
click
the button, it will still plot.
Any ideas how I might get this to automatically occur when the form opens?
Perform the calculation in the form's 'Load' event handler, store the data
in a data structure and draw the graph in the form's 'Paint' event handler
or overridden 'OnPaint' method.
--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>
I did as you suggested. Now the plot flashes up temperarily in the picbox,
then it gets cleared. Any idea what I could be doing wrong, or have set
wrong?
"Herfried K. Wagner [MVP]" wrote: "Mark Lancaster" <Ma***********@ discussions.mic rosoft.com> schrieb: I have a form that displays a time vs temperature graph when the user
clicks
a plot button. The plot is done in a picturebox using gr.drawline. I
would
like for this plot to be made without the user having to click the plot
button, ie when the form opens.
I have tried putting the call to the plotting subroutine in various
places:
the pbox.paint event, the form load event, and several other form events.
Nothing seems to work - I am not getting an error, just no graph. If I
click
the button, it will still plot.
Any ideas how I might get this to automatically occur when the form opens?
Perform the calculation in the form's 'Load' event handler, store the data
in a data structure and draw the graph in the form's 'Paint' event handler
or overridden 'OnPaint' method.
--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>
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