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POC++ wxWidgets - trouble with ScrolledWindow that has no width
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2012-01-04T13:21:14.807
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2012-01-04T15:22:46.410
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2012-01-04T14:28:38.820
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I'm very new to wxWidgets, and C++, but I'm familiar with other toolkits. I wanted a layout like this: <img src="https://i.stack.imgur.com/6LBlO.png" alt="My design"> and this is what it looks like. It looks as though my window has no width at all: <img src="https://i.stack.imgur.com/AhOpC.png" alt="enter image description here"> So this is my code, heavily annotated. And here's my code, which I believe is as close to intent as I can get it. The design is this, each "sender", "sent at" and "message" is in a unique block based on a reusable panel: <pre><code>//CONTENTS OF GUI_MESSAGE_ITEM.H #ifndef GUIMESSAGEITEM_H #define GUIMESSAGEITEM_H #include "wx/panel.h" // Base class: wxPanel #include "wx/stattext.h" #include "sms_message.h" #include "wx/window.h" #include "wx/wx.h" class GUIMessageItem : public wxPanel { public: GUIMessageItem(wxWindow* parent, wxWindowID winid, const SMSMessage& smsMessage); ~GUIMessageItem(); private: wxStaticText* stSender; wxStaticText* stSentTime; wxStaticText* stMessageContents; }; #endif // GUIMESSAGEITEM_H //CONTENTS OF GUI_MESSAGE_ITEM.CPP #include "gui_message_item.h" GUIMessageItem::GUIMessageItem(wxWindow* parent, wxWindowID winid, const SMSMessage& smsMessage) : wxPanel(parent, winid), stSender(new wxStaticText(this, winid, smsMessage.GetSender())), stSentTime(new wxStaticText(this, winid, smsMessage.GetSentTime())), stMessageContents(new wxStaticText(this, winid, smsMessage.GetMessage())) { wxColour blue(wxT("#2A2AF7")); wxColour green(wxT("#56DB4F")); wxFont originalFont = stSender->GetFont(); wxFont boldFont(originalFont); boldFont.SetWeight( wxFONTWEIGHT_BOLD ); wxSize stsMin(100, 60); wxSize bodyMin(300, 100); stSender->SetForegroundColour(blue); stSentTime->SetForegroundColour(green); stSender->SetFont(boldFont); stSentTime->SetFont(boldFont); stSender->SetMinSize(stsMin); stSentTime->SetMinSize(stsMin); stMessageContents->SetMinSize(bodyMin); stMessageContents->Wrap(200); wxBoxSizer* lines = new wxBoxSizer( wxVERTICAL ); wxBoxSizer* topLine = new wxBoxSizer( wxHORIZONTAL ); lines->AddSpacer(4); topLine->AddSpacer(5); this->SetSizer(lines); topLine->Add(stSender, wxALIGN_LEFT); topLine->Add(stSentTime, wxALIGN_RIGHT); lines->Add(topLine); lines->Add(stMessageContents, wxALIGN_CENTER_HORIZONTAL ); lines->SetMinSize(wxSize(400,400)); this->FitInside(); this->Layout(); } GUIMessageItem::~GUIMessageItem() { } //MAIN CODE FOR THE WHOLE FORM MainFrameBase::MainFrameBase( wxWindow* parent, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style ) : wxFrame( parent, id, title, pos, size, style ) { this->SetSizeHints( wxDefaultSize, wxDefaultSize ); //Menu Bar stuff. m_menuBar = new wxMenuBar( 0 ); m_menuFile = new wxMenu(); wxMenuItem* menuFileExit; menuFileExit = new wxMenuItem( m_menuFile, wxID_EXIT, wxString( _("E&xit") ) + wxT('\t') + wxT("Alt+X"), wxEmptyString, wxITEM_NORMAL ); wxMenuItem* menuFileOpen; menuFileOpen = new wxMenuItem( m_menuFile, wxID_OPEN, wxString( _("&Open") ) + wxT('\t') + wxT("Alt+O"), wxEmptyString, wxITEM_NORMAL ); m_menuFile->Append( menuFileOpen ); m_menuFile->Append( menuFileExit ); m_menuBar->Append( m_menuFile, _("&File") ); this->SetMenuBar( m_menuBar ); //main sizer for whole interface wxBoxSizer* mainSizer = new wxBoxSizer( wxVERTICAL ); this->SetSizer( mainSizer ); // Filter box section wxStaticText* filterLabel = new wxStaticText(this, wxID_ANY, wxT("Filter by Sender:")); m_filter = new wxComboBox( this, wxID_ANY, wxT(""), wxDefaultPosition, wxDefaultSize, 0, NULL, wxCB_DROPDOWN|wxCB_READONLY ); wxBoxSizer* filterSizer = new wxBoxSizer( wxHORIZONTAL ); filterSizer->Add(filterLabel); filterSizer->Add(m_filter); mainSizer->Add(filterSizer); // List of Messages section //The issue must be here somewhere... m_scrWin = new wxScrolledWindow( this, wxID_ANY ); m_listSizer = new wxBoxSizer(wxVERTICAL); m_scrWin->SetSizer(m_listSizer); mainSizer->Add(m_scrWin, wxEXPAND); //m_scrWin should take the WHOLE of the interface. //example msg SMSMessage* exampleMessage = new SMSMessage( wxT("+44 07950 322 789"), wxT("2011-13-07 13:22"), wxT("Yo mate, what's up?") ); for (int i = 0; i < 6; i++) { AddSMSMessagePanel(*exampleMessage); } //wxSize minimum(300,500); m_scrWin->FitInside(); //Use fit inside to make the scrollwindow use the width of the items inside? without doing this I get no scrollbar at all... //m_scrWin->SetMinSize(minimum); //m_listSizer->SetMinSize(minimum); //m_scrWin->EnableScrolling(true, true); //m_scrWin->SetScrollRate(1,1); m_scrWin->SetScrollRate(5, 5); this->Layout(); m_statusBar = this->CreateStatusBar( 1, wxST_SIZEGRIP, wxID_ANY ); this->Centre( wxBOTH ); // Connect Events this->Connect( wxEVT_CLOSE_WINDOW, wxCloseEventHandler( MainFrameBase::OnCloseFrame ) ); this->Connect( menuFileOpen->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler( MainFrameBase::OnFileOpen ) ); this->Connect( menuFileExit->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler( MainFrameBase::OnExitClick ) ); } void MainFrameBase::AddSMSMessagePanel(const SMSMessage& message) { GUIMessageItem* gmi = new GUIMessageItem(m_scrWin, wxID_ANY, message); //object inherits from wxPanel m_listSizer->Add(gmi); } </code></pre> I'm sorry to bring such specific questions like this here, but I'm new to C++ and to wxWidgets and I've spent about 5 hours trying to solve this issue already and I don't know what knowledge I lack. This is a link to the complete source code: <a href="https://github.com/PhillipTaylor/SMSReader" rel="nofollow noreferrer">https://github.com/PhillipTaylor/SMSReader</a>
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C++ wxWidgets - trouble with ScrolledWindow that has no width
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