Help string is not showing in PropertyGrid

[LumaRay]

Hello. I have previously opened this issue: https://github.com/wxWidgets/Phoenix/issues/1714 You have suggested that I upgrade wxPython to the newer dev version 4.1.1a1. So did I, and that problem was solved. But now I have another problem: help strings in PropertyGrid are not showing in this dev alpha version. They do though after I downgrade the version to 4.1.0 using pip3 install --upgrade wxpython=4.1.0

import wx
import wx.propgrid

class MyFrame(wx.Frame):
    S_NORMAL_FACE_DETECTION_ALGORITHM = "NormalFaceDetectionAlgorithm"
    S_NORMAL_FACE_DETECTION_ALGORITHM_OPENCV = 0
    S_NORMAL_FACE_DETECTION_ALGORITHM_TENSORFLOW = 1
    S_WINDOW_WIDTH = "WindowWidth"

    def __init__(self, *args, **kwds):
        kwds["style"] = kwds.get("style", 0) | wx.DEFAULT_FRAME_STYLE
        wx.Frame.__init__(self, *args, **kwds)
        self.SetSize((400, 450))
        self.pane_1 = wx.Panel(self, wx.ID_ANY, wx.DefaultPosition, wx.Size(400, 450))

        self.property_grid_1 = wx.propgrid.PropertyGridManager(self.pane_1, wx.ID_ANY,
                                                               style=wx.propgrid.PG_BOLD_MODIFIED | wx.propgrid.PG_DESCRIPTION | wx.propgrid.PG_SPLITTER_AUTO_CENTER | wx.propgrid.PG_TOOLBAR | wx.propgrid.PG_TOOLTIPS)
        self.property_grid_1.AddPage("Test page")
        pr = wx.propgrid.EnumProperty(label="Face detection algorithm", name=self.S_NORMAL_FACE_DETECTION_ALGORITHM,
                                      value=self.S_NORMAL_FACE_DETECTION_ALGORITHM_TENSORFLOW)
        pr.SetHelpString("Description: Face detection algorithm")
        pr.AddChoice(label="OpenCV HaarCascade", value=self.S_NORMAL_FACE_DETECTION_ALGORITHM_OPENCV)
        pr.AddChoice(label="Tensorflow FCNN Yolo", value=self.S_NORMAL_FACE_DETECTION_ALGORITHM_TENSORFLOW)
        pr.SetChoiceSelection(self.S_NORMAL_FACE_DETECTION_ALGORITHM_TENSORFLOW)
        self.property_grid_1.Append(pr)

        pr = wx.propgrid.IntProperty(label="Window width", name=self.S_WINDOW_WIDTH, value=800)
        pr.SetEditor("SpinCtrl")
        pr.SetHelpString("Description: Window width")
        self.property_grid_1.Append(pr)

        pgv = self.property_grid_1.GetPropertyValues(inc_attributes=True)

        self.property_grid_1.SetPropertyValues(pgv, autofill=True)

        self.label_alg = wx.TextCtrl(self.pane_1, id=wx.ID_ANY, size=(50, 50))
        self.label_alg.SetLabel("Test")

        sizer_1 = wx.BoxSizer(wx.VERTICAL)
        sizer_1.Add(self.property_grid_1, 1, wx.EXPAND, 0)
        sizer_1.Add(self.label_alg, 1, wx.EXPAND, 0)
        self.pane_1.SetSizer(sizer_1)
        self.SetSizer(sizer_1)

        self.timer = wx.Timer(self)
        self.timer.Start(1000. / 15)

        self.Bind(wx.EVT_TIMER, self.TimerJob)

    def TimerJob(self, evt):
        algProp = self.property_grid_1.GetProperty(self.S_NORMAL_FACE_DETECTION_ALGORITHM)
        alg = algProp.GetChoiceSelection()
        self.label_alg.SetLabel("Choice is: " + str(alg))

class MyApp(wx.App):
    def OnInit(self):
        self.frame = MyFrame(None, wx.ID_ANY, "")
        self.SetTopWindow(self.frame)
        self.frame.Show()
        return True

# end of class MyApp

if __name__ == "__main__":
    app = MyApp(0)
    app.MainLoop()

[swt2c]

What OS? I see the help string on GTK so it may be OS-specific.

[LumaRay]

Windows 10 x64

[swt2c]

This doesn't seem like it would be a problem in wxPython itself. Can you compile wxWidgets master branch and see if you observe the problem in the propgrid sample? If so, then I would suggest opening a trac ticket.

[LumaRay]

@swt2c, I'm not very familiar with installations by compiling, so I just tried to follow instructions from this page: https://docs.wxwidgets.org/trunk/plat_msw_install.html In particular I have compiled wxWidgets using Visual Studio 2019 compiler: > nmake /f makefile.vc BUILD=release SHARED=1 TARGET_CPU=X64 But what should I do next? How to tell Python3 to use this compiled version?

[swt2c]

There should be a propgrid sample in the samples/propgrid directory. You may have to compile it separately. Once you do that, you can run it and see if you observe the same behavior with the missing help string.

[LumaRay]

I have found and compiled that example, but it is missing dlls, where do I find them?

[swt2c]

They should be somewhere down the build tree - you compiled them earlier. (Sorry, I'm not very familiar with how Windows builds work.)

[LumaRay]

Ok, I have searched for *.dll and fould them here: wxWidgets\lib\vc_x64_dll\ I have run the sample and it doesn't show the help string for any property selected: https://www.screencast.com/t/qJ0sGnRdoQ

[swt2c]

In that case, you should file a wxWidgets bug at https://trac.wxwidgets.org/.

[LumaRay]

Ok, posted that: https://trac.wxwidgets.org/ticket/18825#ticket

[LumaRay]

I can see devs replied already: "This issue is not related to wxPropertyGrid itself. It is about measuring empty text extent" Actually I don't understand what that means and what to do to fix that, and you? And also how do I manage that ticket? Should I close it or say something else there?

[swt2c]

He's saying it's a regression in wxWidgets, but not just in PropertyGrid itself. You don't need to respond to it yet. Someone will hopefully respond and fix it.

[LumaRay]

Ok, thank you for bearing with me.

[swt2c]

I would leave this ticket open here because once they fix the problem in wxWidgets, we'll have to update wxPython to pick up the fix.

[LumaRay]

Ah, allright, reopening...

[swt2c]

I think this should supposedly be fixed in the latest snapshots (as wxWidgets was updated). Can you give them a try?

[LumaRay]

Do you mean I can checkout and compile wxWidgets? Or how do I use the snapshots?

[swt2c]

For Windows, you should be able to use the precompiled wheels and not have to compile anything. See the instructions here: https://wxpython.org/Phoenix/snapshot-builds/README.txt. Make sure you install the one with 75f1081f in the name as that's the latest one.

[LumaRay]

Ok, and for Debian 10.4 x64?

[swt2c]

Do you see this particular issue on Debian? I don't see it on Linux so I assumed it was probably Windows-only.

[LumaRay]

Well, on Windows 10 x64 I have upgraded wxPython to your latest snapshot: pip3 install --upgrade https://wxpython.org/Phoenix/snapshot-builds/wxPython-4.1.1a1.dev4892+33fa9afd-cp37-cp37m-win_amd64.whl After that the help strings in PropertyGrid did start showing. However now enum dropdowns are not opening anymore. You can take and try the sample code I posted above.

Regarding Debian, right, I have forgotten that it is just Windows issue. Checked in Debian - help strings are showing and dwopdowns work.

[swt2c]

Well, on Windows 10 x64 I have upgraded wxPython to your latest snapshot: pip3 install --upgrade https://wxpython.org/Phoenix/snapshot-builds/wxPython-4.1.1a1.dev4892+33fa9afd-cp37-cp37m-win_amd64.whl After that the help strings in PropertyGrid did start showing. However now enum dropdowns are not opening anymore. You can take and try the sample code I posted above.

Sigh, one thing fixed and another thing breaks. The wxWidgets trunk has been rather busy lately as they are preparing for a release. It should hopefully be fixed soon.

[LumaRay]

I can change dropdown values with arrow keys, but the problem is, the set events are not firing.

[LumaRay]

Actually set events are not firing even in 4.1.1a1.dev4867 version. I use it like this: pr.OnSetValue = self.onPropertyInfraredDisplayPaletteChanged This is a problem, because I need to perform actions based on that event :(

[swt2c]

I think it's been fixed in wxWidgets. Robin just needs to update the ref in wxPython.

[LumaRay]

I have just installed the latest snapshot: pip3 install --upgrade https://wxpython.org/Phoenix/snapshot-builds/wxPython-4.1.1a1.dev4919+57702fa7-cp37-cp37m-win_amd64.whl Still PG dropdowns are not expanding...