Support for High DPI on Windows 10

wxPython Dev
1

Hey there,

So, I’ve had some users complain about scaling issues on Windows. I understand that support for scaling on Windows is kinda iffy - a lot of the support comes from wxWidgerts 3.1, which there currently isn’t a wxPython build for (that I know of). So, my questions are:

  1. When can we expect a wxPython 4.1.0 build to test out so that we can play around with the new wxWidget features?

  2. Is there anything that I can do in the interim while using 4.0.x? Anything to sharpen the text in Windows?

Thanks!

2

I’ve dealt with this in two areas, 1) turn on high DPI awareness at application startup; 2) hack up various pure Python bits of wxPython to allow me to control font size (I use the agw ribbon bar, which has hard-coded font sizes internally, so I’ve got various patches that add font resizing capabilities).

class App(wx.App):

def __init__(self, redirect=False, **kwds):

    try:

        from ctypes import OleDLL

        # Turn on high-DPI awareness to make sure rendering is sharp on big

        # monitors with font scaling enabled.

        OleDLL('shcore').SetProcessDpiAwareness(1)

    except AttributeError:

        # We're on a non-Windows box.

        pass

    except OSError:

        # exc.winerror is often E_ACCESSDENIED (-2147024891/0x80070005).

        # This occurs after the first run, when the parameter is reset in the

        # executable's manifest and then subsequent calls raise this exception

        # See last paragraph of Remarks at

        # [https://msdn.microsoft.com/en-us/library/dn302122(v=vs.85).aspx](https://msdn.microsoft.com/en-us/library/dn302122(v=vs.85).aspx)

        pass
···

On Mon, Jul 16, 2018 at 9:09 PM Ryan Holmes ryan.xgamer99@gmail.com wrote:

Hey there,

So, I’ve had some users complain about scaling issues on Windows. I understand that support for scaling on Windows is kinda iffy - a lot of the support comes from wxWidgerts 3.1, which there currently isn’t a wxPython build for (that I know of). So, my questions are:

  1. When can we expect a wxPython 4.1.0 build to test out so that we can play around with the new wxWidget features?
  1. Is there anything that I can do in the interim while using 4.0.x? Anything to sharpen the text in Windows?

Thanks!

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