https://docs.wxwidgets.org/3.0/classwx_ ... indow.html
to divide a frame into 3 equal size panes
But I don't quite get the desired result with these parameters below in
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splitter_1->SetMinSize(wxSize(1000, -1));
splitter_2->SplitVertically(panel_2, panel_3, 700);
where
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size_t panel_size = rect.GetWidth() / 3;
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wxFrameTrader::wxFrameTrader(const wxString& title)
: wxFrame(NULL, wxID_ANY, title)
{
wxDisplay display(wxDisplay::GetFromWindow(this));
wxRect rect = display.GetClientArea();
size_t panel_size = rect.GetWidth() / 3;
wxSplitterWindow* splitter_1 = new wxSplitterWindow(this);
splitter_1->SetSashInvisible(true);
splitter_1->SetMinSize(wxSize(1000, -1));
wxPanel* panel_1 = new wxPanel(splitter_1, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxDOUBLE_BORDER);
panel_1->SetBackgroundColour(wxColour(128, 0, 0));
wxSplitterWindow* splitter_2 = new wxSplitterWindow(splitter_1);
splitter_2->SetSashInvisible(true);
splitter_2->SetMinSize(wxSize(2000, -1));
wxPanel* panel_2 = new wxPanel(splitter_2, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxDOUBLE_BORDER);
panel_2->SetBackgroundColour(wxColour(0, 128, 0));
wxPanel* panel_3 = new wxPanel(splitter_2, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxDOUBLE_BORDER);
panel_3->SetBackgroundColour(wxColour(0, 0, 128));
splitter_1->SplitVertically(splitter_2, panel_1, 0);
splitter_2->SplitVertically(panel_2, panel_3, 700);
}