Windows 10: GDI Object leak in Windows 10 when printing with Gdiplus

Hello there, I've been suggested to post this here from the Visual Studio Developer community.


There seem to be a GDI Object leak issue when printing to certain printers, including but not limited to, the Microsoft XPS Document Writer.


When rendering to the printer's graphics a 32 bpp bitmap with alpha components, there's a constant increase of GDI objects that never get released, obviously causing the application to crash when the count reaches the 10k limit.


Here's a detailed video reproducing the issue

2021-04-09_12-23-39.mp4

Here's a small vb.net project posted to the developer community that reproduces the problem.
GdiPrintLeakTest.zip
This is a vb.net project developed with VS2017, targeting Framework 4.7.1.


Here's the original post in the Visual Studio developer community:
When rendering an in-memory created bitmap with argb contents in Windows 10 19042.867 x64, GDI leak happens


The memory leak happens on Windows 10 19042.867 x64 and does not happen on Windows 7 x64, x32.

It does not happen when the contents of the image being rendered do not contain any semi-transparent pixels.

Hoping to hear from you.

Thank you.

:)

 

GDI+ Window Computer Freeze

GDI+ was not completely migrated like GDI was when Windows Vista and above were being developed. Not many programs use GDI+ and those that do tend to be older.

Windows 10 Creator's Edition also shows GDI+ errors which suggests MSFT still has not fixed the API completely.

 

No GDI list in Task manager?

I’ve some problems with an application I’m running and as part of the problem solving process I need to monitor how many GDI objects or handles it’s using. Most forums say that I should go to my task manager and in the view menu activate the GDI list.

If I go to Processes in Task manager there are no other option under view for other things to monitor, if I right click the bar below I do get a drop down list but it only has CPU, Memory, Disk and Network.

The forums and help pages all skip over this as it’s apparently very easy but I can’t see an option to monitor anything other than the 4 I mentioned. I’ve looked for Windows 10 guides and they all say the same thing, just go to the Task manager and have
a look at the different lists, why can’t I see any?

[Post moved by the moderator to the appropriate forum category]

 

Memory leak ? icons and preview disapear, Ghost RAM usage


There's a known issue in Build 9879, when GDI objects count in Explorer process reaches 10,000 the Explorer starts acting like you described. More about this issue on Microsoft TechNet: https://social.technet.microsoft.com...iew2014General

To see the number of GDI objects, open Task Manager and go to Details tab. Right click anywhere in the column titles row and click Select columns and select GDI objects from the list, click OK:




The GDI objects are now shown:




When this count reaches 10,000 the issue starts but it can luckily be easily and fast fixed. First kill (end) the Explorer process by right clicking it and selecting End task:




Notice that killing the whole Explorer process your Taskbar and all open File Explorer windows will disappear.

Now open the Task Manager's File menu and select Run new task, type Explorer.exe and click OK:




Explorer restarts, the GDI object count is low and you can continue using Windows normally.