Background color of pdf

[heard]

Hi Loic,
Is there a way to set the background color of a pdf to white? This is related to my previous question about background color. I'm trying to create a new image with white background, then draw part of an existing image into it. I got this to work fine but now I want to take the newly created image and save it as a pdf. If I create the page in the pdf and draw the image into it, the background is black, not white.

Thanks,
Heard

[Loïc]

Hi Heard,

I don't understand you.

Please, provide code snippet, detailed explanations and attach your resulting PDF.

Kind regards,

Loïc

[heard]

Hi Loic,
Let's say we have a standard 8.5x11 page.

Code: Select all

pic_ID=gdpic.createimagefromfile('c:\test.tif')


I want to take the top 2" and save as a pdf, but I want the pdf to be 8.5x11 with white background.
First create a new image with a white background:

Code: Select all

gdpic.SetVerticalResolution(300)
gdpic.SetHorizontalResolution(300)
pic2_ID=gdpic.CreateNewImage(2550,3300,32,16777215)
gdpic.DrawImage(pic1_ID,0,0,2550,600) 'Draw only 2".

Now I want to save it as a pdf. I want the pdf page to also be 8.5x11 but I don't want the remaining 6.5 inches to be black. I want it to be white.

Code: Select all

gdpic.PdfNewPdf('c:\test.pdf')
gdpic.pdfSetMeasurementUnits(3)
gdpic.PdfAddImageFromGDpictureImage(pic2_ID)
gdpic.PdfSetPageDimensions(8.5,11)
gdpic.PdfNewPage
gdpic.PdfDrawImage(1,0,0,8.5,11)
gdpic.PdfEndPage
gdpic.PdfSavePdf

If you do this, the background of the pdf is black, not white. There must be an easier way to do this.


Thanks,
Heard

[Loïc]

Heard, you have a black background because you are creating a bitmap with a black background.

Just replace

Code: Select all

pic2_ID=gdpic.CreateNewImage(2550,3300,32,16777215)

by:

Code: Select all

pic2_ID=gdpic.CreateNewImage(2550,3300,32,gdpic.ARGB(255,255,255,255))

Kind regards,

Loïc

[heard]

Thank you, Loic!!

Does the new download take care of my PrintImageDialog issue?

Regards,
Heard

[Loïc]

Yes !