SolidWorks Tutorials on Demand

First of all.

Why you want to change thikness of lines in sketch? There is no reasson to do that.

Secondly

You can use mouse wheel to zoom in zoom out.

Size of points is set by default and as far as i know it cant be changed.

Even if you use mouse wheel to zoom you will find that size of points stays same irrelevant of the zoom percentage

Thank for your information! but thikness of lines and size of points really small so i can't see it on sketch, and they are difficult to sketching too.

i had try using mouse but nothing be change

As i mentioned

Size of points is set by default and as far as i know it cant be changed.

Even if you use mouse wheel to zoom you will find that size of points stays same irrelevant of the zoom percentage

ohhh 1 question what monitor you use (what inch) and what is the ressolution set at?

If you use a 21'' monitor the resolution i see is to high... set it at 1920X1080 if it is rectangle (probably is) and your problem will be solved

it is my laptop, it's monitor 4K (3840 × 2160 ). and i don't know well commuter so can you help me adjust it to reasonable.

it is 15.6 inch

Huge resolution for 15,6'' screen you should use 1366x768,

max 1920 x 1080

Thank you for your help. it is very helpful

Glad i could help