Color Shift in PDF Display – Light Gray -> Dark

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   Hello everyone,
I’m loading a PDF document into a PictureBox for display, but I’m experiencing an issue with color accuracy. The gray tones in the original PDF appear different in the PictureBox – specifically, light gray turns into dark gray.

Functions, that I use:

' Open the file, get a file handle
fileHandle = QP.DAOpenFileReadOnly(File_Name, password)

 ' Render the page to BMP format into the byte array
Dim bitmapData = QP.DARenderPageToString(fileHandle, pageReference, 0, smallestDPI)

' Put the byte array into a stream
Dim stream As New System.IO.MemoryStream(bitmapData)

 ' Create a new Image from the stream
 PctPreview.Image = Image.FromStream(stream)

Does anyone know what might be causing this? How can I ensure that the colors are displayed correctly?

Thanks for your help! 

Edited by Skandinavier - 31 Mar 25 at 10:34AM

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Skandinavier Members Profile Find Members Posts Beginner Joined: 27 Nov 20 Status: Offline Points: 11	Post Options Post Reply Quote Skandinavier Report Post Thanks(0) Quote Reply Topic: Color Shift in PDF Display – Light Gray -> Dark Posted: 31 Mar 25 at 10:31AM
	Hello everyone, I’m loading a PDF document into a PictureBox for display, but I’m experiencing an issue with color accuracy. The gray tones in the original PDF appear different in the PictureBox – specifically, light gray turns into dark gray. Functions, that I use: ' Open the file, get a file handle fileHandle = QP.DAOpenFileReadOnly(File_Name, password) ' Render the page to BMP format into the byte array Dim bitmapData = QP.DARenderPageToString(fileHandle, pageReference, 0, smallestDPI) ' Put the byte array into a stream Dim stream As New System.IO.MemoryStream(bitmapData) ' Create a new Image from the stream PctPreview.Image = Image.FromStream(stream) Does anyone know what might be causing this? How can I ensure that the colors are displayed correctly? Thanks for your help! Edited by Skandinavier - 31 Mar 25 at 10:34AM