Operating system: Windows 10 Version 10.0.17134 Build 17134
wxPython version: 4.03
Stock or custom build: Stock
Python version: 2.7.14
Stock or custom build: Stock
Description of the problem:
On a system with 125% or more scaling (Display settings, "change the size of text, apps and other items"). When using ctypes.windll.user32.SetProcessDPIAware() with CheckListBox the check marks seems to have scaling issues.
This is related to #835 ("Low-res checkbox images ChecklistCtrlMixin"), but I believe a new issue should be created due to differences in OS, the exact control in question, and the relevance of SetProcessDPIAware. I also tested CheckListCtrlMixin and could not reproduce the same issue.
This can be demonstrated by including the following at the top of the CheckListBox wxPython demo:
import ctypes
ctypes.windll.user32.SetProcessDPIAware()
And full demo code:
import ctypes
ctypes.windll.user32.SetProcessDPIAware()
import wx
class TestPanel(wx.Panel):
def __init__(self, parent):
wx.Panel.__init__(self, parent, -1)
sampleList = ['zero', 'one', 'two', 'three', 'four', 'five',
'six', 'seven', 'eight', 'nine', 'ten', 'eleven',
'twelve', 'thirteen', 'fourteen']
lb = wx.CheckListBox(self, -1, (80, 50), wx.DefaultSize, sampleList)
lb.SetSelection(0)
lb.SetCheckedItems([1,])
self.lb = lb
#----------------------------------------------------------------------
class RunDemoApp(wx.App):
def __init__(self):
wx.App.__init__(self, redirect=False)
def OnInit(self):
frame = wx.Frame(None, -1, "test", pos=(50,50), size=(200,100),
style=wx.DEFAULT_FRAME_STYLE, name="test")
frame.Show(True)
win = TestPanel(frame)
# so set the frame to a good size for showing stuff
frame.SetSize((640, 480))
win.SetFocus()
self.window = win
self.SetTopWindow(frame)
self.frame = frame
return True
def OnExitApp(self, evt):
self.frame.Close(True)
if __name__ == "__main__":
app = RunDemoApp()
app.MainLoop()
Which produces the following, first with the call to SetProcessDPIAware and then without:


The following is a screenshot comparing the check mark of CheckListCtrlMixin with CheckListBox, produced with code available in a gist.

Operating system: Windows 10 Version
10.0.17134 Build 17134wxPython version: 4.03
Stock or custom build: Stock
Python version: 2.7.14
Stock or custom build: Stock
Description of the problem:
On a system with 125% or more scaling (Display settings, "change the size of text, apps and other items"). When using
ctypes.windll.user32.SetProcessDPIAware()withCheckListBoxthe check marks seems to have scaling issues.This is related to #835 ("Low-res checkbox images ChecklistCtrlMixin"), but I believe a new issue should be created due to differences in OS, the exact control in question, and the relevance of
SetProcessDPIAware. I also testedCheckListCtrlMixinand could not reproduce the same issue.This can be demonstrated by including the following at the top of the
CheckListBoxwxPython demo:And full demo code:
Which produces the following, first with the call to

SetProcessDPIAwareand then without:The following is a screenshot comparing the check mark of
CheckListCtrlMixinwithCheckListBox, produced with code available in a gist.