make things simpler, improve compatibility.

[ar37-rs]

• Simpler
• V-sync enabled
• Fix losing pixel per points and resizable issue
• Fuse cursor support.
• More compatibility with essential features (such proper zoom and scroll).

[ar37-rs]

thank you @ArjunNair , changed according to the preferred.

[ArjunNair]

Didn't mean to leave this hanging but my PC conked off. Merging! Thank you for your patience.