Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Transparent bitmap

Posted on 1997-04-03
6
Medium Priority
?
430 Views
Last Modified: 2013-12-03
Hi,

I am trying to blit transparent DIB to memory DC of PostScript driver.
No luck yet.

I have seen references to

 bTransSupport = (GetDeviceCaps(hDC, CAPS1) & C1_TRANSPARENT) ? TRUE :
FALSE;

but can't find definitions of CAPS1 & C1_TRANSPARENT.

Does smb know smth about it?

Thank you very much,
Gary Vernikov
gvernikov@documagix.com

P.S.: Pls, make a note that I am asking about Postscript Driver DC. Only. Win32. Only. All the rest doesn't seem to be a problem.

I do have MSDN and checked all stuff there.
0
Comment
Question by:garyv
  • 3
  • 3
6 Comments
 
LVL 23

Accepted Solution

by:
chensu earned 300 total points
ID: 1334358
If bTransSupport is TRUE, that means you can transparent bitblt that uses the current background color of the DC as the transparent color.

if (GetDeviceCaps(hdcD, CAPS1) & C1_TRANSPARENT)
    {
        WORD w;
        w = SetBkMode(hdcD, TRANSPARENT1);
        f = BitBlt(hdcD,x,y,dx,dy,hdcS,x0,y0,SRCCOPY);
        SetBkMode(hdcD, w);
    }

But you are trying to blit transparent DIB. There are some examples on the Microsoft JumpStart 2.0 CD-ROM/Latestuf/Dibfx. If you cannot get it, let me know, I can send it to you by E-Mail.

0
 

Author Comment

by:garyv
ID: 1334359
Edited text of question
0
 
LVL 23

Expert Comment

by:chensu
ID: 1334360
Since Win32 is a device independent platform, Postscript Driver DC should behave like other DCs.
0
Veeam Disaster Recovery in Microsoft Azure

Veeam PN for Microsoft Azure is a FREE solution designed to simplify and automate the setup of a DR site in Microsoft Azure using lightweight software-defined networking. It reduces the complexity of VPN deployments and is designed for businesses of ALL sizes.

 

Author Comment

by:garyv
ID: 1334361
But all DCs have their own characteristics... Try to print transparent bitmap on Postscript and U'll see what I mean.
0
 
LVL 23

Expert Comment

by:chensu
ID: 1334362
If you cannot print transparent bitmap on Postscript DC, you can do it on a general DC and bitblt it to Postscript DC. C1_TRANSPARENT is not defined in Win32.

0
 

Author Comment

by:garyv
ID: 1334363
Just looks like Postscript doesn't support transparency
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article shows a few slightly more advanced techniques for Windows 7 gadget programming, including how to save and restore user settings for your gadget and how to populate the "details" panel that is displayed in the Windows 7 gadget gallery.  …
This article describes a technique for converting RTF (Rich Text Format) data to HTML and provides C++ source that does it all in just a few lines of code. Although RTF is coming to be considered a "legacy" format, it is still in common use... po…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an anti-spam), the admin…

824 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question