Multi-monitor setup doesn't allow resolutions for non-primary screens

[ondrejpokorny]

Description

If STK is started on a system with 2 monitors, there are no resolutions available for the secondary monitor. It is not possible to run STK in full-screen mode on the secondary monitor.

Steps to reproduce

1. You need 2 (or more) monitors with different resolutions.
2. The best is to turn the primary monitor 90 degrees to have a portrait format (e.g. 1200x1920 - yes, upright !!!).
3. The second monitor then with a normal landscape format (1920x1200).
4. Run STK.
5. STK allows you to set almost only portrait resolutions: 1024x1280, 1050x1680, 1080x1920, 1020x1600, 1200x1920
6. The only landscape resolutions are 1280x720 and 1024x768 but "1280x720" fails when applying. So the only landscape resolution that can be used is 1024x768.

Desired behavior

1. STK should list possible resolutions for the non-primary monitors as well (up to 1920x1200).
2. The target monitor for full-screen mode should be configurable in the options.

Configuration

• STK release version: 1.3
• STK Source: official binary
• System: Windows 10
• Graphics card: NVIDIA GeForce GTX 1050
• CPU: Intel Core i7-8700
• primary monitor resolution: 1200x1920
• secondary monitor resolution: 1920x1200