Unopenable BMP from PrintCtrl

[NoVIsonme]

Trying to print a simple graph, but the fule is unreadable. The function returns success when SetPrintAttribute() is set to either option. I've attached the bitmap which should be roughly as below (yes I know it needs work!)

[Kobi_K]

Hi , can you explain better do you have any error code ?

I know there was a problem with the CVI Run-Time engine with some graph issue 

http://digital.ni.com/public.nsf/allkb/9423B6B930BE467C862576B700786B14?OpenDocument&metc=ph_Notific...

but if you can explain better maybe I'll be able to assist you..

[NoVIsonme]

Thanks but that didn't make any difference. Opening the file in a hex viewer shows that the start is a load of random print driver settings. I'd say it's looking like a bug at the moment.

[LuisG]

I don't completely understand your situation. Which file is this, exactly? Is this a .bmp file that you are trying to display on the graph? And which SetPrintAttribute options are you referring to?

Luis

[NoVIsonme]

The file I attached is a bitmap file produced by PrintCtrl but renamed as this board won't accept .bmp extensions. The SetPrintAttribute options I referred either draws the control to an intermediate bitmap or not. The whole thing is a cheap'n'dirty way to print a graph onto a report, since NIReports doesn't offer this feature and I haven't got the time to spare to do it properly in Word and Excel.

[RobertoBozzolo]

As far as I can understand you want to obtain an image out of your graph and include it in a report with NIReport_AppendImageFile.

If this is your situation you could:

1. Obtain a bitmap of your graph control with GetCtrlDisplayBitmap

2. Save the bitmap to a file with SaveBitmapToBMPFile or SavebitmapToJPEGFile

3. Discard the bitmap

4. Append the image tot he report

The file you obtain from PrintCtrl is a print file (i.e. a file intended to be sent to the printer, that includes control codes for the printer). The intermediate bitmap optionally used internallyby PrintCtrl is not available for direct use.

[NoVIsonme]

Thanks, that clears things up nicely. I have been using GetScaledCtrlDisplayBitmap, but am having to save at 2/3 scale and the image is blurry. I think we're becoming victims of ever increasing screen resolution, since the size of paper never changes.

[RobertoBozzolo]

You could duplicate the graph on a hidden panel and rescale it before getting the image of the control: with auto divisions on at least axes and grid should maintain a good aspect even on small sizes.