Installer DPI Scaling

[niwrad777]

Hello
How can I make my installer use Windows scaling?
The UI looks blurry, with a 125% scale, the preview image is on attachments files.

Note: Winamp Installer is compatible with Windows scaling.

Regards

[Pawel]

Have you tested the following instructions:

ManifestDPIAware True
ManifestSupportedOS all
-Pawel

[Nutzzz]

The High-DPI issue was briefly discussed last year in this thread. Depending on what features and plugins you use, you may end up with some small interface elements. If you're using the components page, there are a couple of solutions in that thread for the checkboxes, at least.

[Anders]

Just a quick note on ManifestSupportedOS.

Originally Posted by Pawel

ManifestSupportedOS all

"All" is basically all the GUIDs we know about (in that NSIS version) and the compiler default is currently "All except Vista" because that GUID has no effect if the GUID for 7 is specified.

If you are using a NSIS version released before Windows 10 you would use

ManifestSupportedOS Win7 Win8 Win8.1 {8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}

... and if Microsoft changes their mind and creates a Windows 11 you would append that GUID until we add support for it.

I don't think you even need the latest GUIDs for DPI support to work.

If you are not using custom pages (Welcome and Finish are custom pages) then you can experiment with some undocumented (for now) attributes:

ManifestDPIAware System ; System DPI on Vista/7/8/8.1/10(<10.1607(AU))
ManifestDPIAwareness "PerMonitorV2,System" ; PMv2 on 10.1703(CU)+, System on 10.1607(AU) with NSIS 3.03+

There are now two attributes because Microsoft has two manifest attributes because they failed and painted themselves into a corner with the first one This might change and that is why it is undocumented.

This dynamic multimonitor DPI support only works on recent Windows 10 versions. There is also a PerMonitor(V1) attribute but we don't support that at all. We are not currently parsing that string so you can specify whatever you want by looking them up on MSDN, just remember that we don't have full support for this and Microsoft keeps changing how DPI stuff works in 10 so you need to do a lot of testing.