droplet tool doesn't correct when screen have set to scale

[pureexe]

When you windows screen have set to scale in settings. droplet tool that use to get pixel color in video doesn't work correctly.

screenshot of bug.

[wangqr]

You can disable system-level DPI resize by right click on aegisub.exe -> properties -> compatibility -> change high dpi settings -> check "high dpi scaling override", and select "application" in the drop down menu.

[pureexe]

Confirm that your method solves the problem.
but I hope aegisub next release will solve this problem.

[pureexe]

I never work with wxWidgets before but look like the problem is around this line.

Aegisub/src/dialog_colorpicker.cpp

Lines 340 to 342 in ce658d0

	void OnMouse(wxMouseEvent &evt) {
	int x = evt.GetX();
	int y = evt.GetY();

and to fix might be change to this

void OnMouse(wxMouseEvent &evt) {
    double scale = GetContentScaleFactor();
    int x = evt.GetX() * scale;
    int y = evt.GetY() * scale;

a wxWidget reference that i just search on google.
https://docs.wxwidgets.org/3.0/classwx_window.html#a6f230d4db56d1d2ab364fe1491f2e9ba

[wangqr]

I believe that Aegisub is able to handle DPI scaling itself. And handling DPI scaling by application will give a much better/sharper look. Some text box size related issue is fixed in #37 or in my fork. Personally I set the DPI aware flag in manifest while compiling Aegisub on Windows, so DPI scaling is handled by Aegisub automatically without the need of overriding.

[pureexe]

if it can fix easily from the manifest. I hope aegisub dev team will fix it soon.