wxCheckBox without a label shows two white dots (wxMSW, Dark Mode) (Issue #26778)

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BazaarAcc32

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5:08 AM (8 hours ago) 5:08 AM

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BazaarAcc32 created an issue (wxWidgets/wxWidgets#26778)

When creating a wxCheckBox, if you specify an empty string as the label, two white dots will appear on a black background. If you don't see them, change the Scale to, say, 175% and restart the application. These white dots will appear next to each checkbox when we select it.

scaled_checkbox.png (view on web)

To reproduce

#include <wx/wx.h>
#include <wx/msw/private.h>

class MyFrame : public wxFrame
{
public:
    MyFrame()
        : wxFrame(nullptr,
            wxID_ANY,
            "wxWidgets Dark Mode",
            wxDefaultPosition,
            wxSize(400, 300))
    {
        wxPanel* panel = new wxPanel(this);

        wxFlexGridSizer* sizer = new wxFlexGridSizer(0, 1, 8, 8);
        sizer->AddGrowableCol(0);

        for (int i = 0; i < 4; ++i)
        {
            wxCheckBox* checkBox = new wxCheckBox(panel, wxID_ANY, "");

            sizer->Add(checkBox,
                0,
                wxEXPAND | wxALL,
                8);
        }

        panel->SetSizer(sizer);

        Centre();
    }
};

class MyApp : public wxApp
{
public:
    bool OnInit() override
    {
        MSWEnableDarkMode(wxApp::DarkMode_Always);

        MyFrame* frame = new MyFrame();
        frame->Show();

        return true;
    }
};

wxIMPLEMENT_APP(MyApp);

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Steve Cornett

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12:16 PM (1 hour ago) 12:16 PM

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stevecor left a comment (wxWidgets/wxWidgets#26778)

I am unable to reproduce. I pasted your code over the minimal sample and verified wx_dpi_aware_pmv2.manifest is in the project. I tried 100% scale and 175% scale, tried 3.3.3 and the latest master. No luck.