Search code examples
c++wxwidgets

wxScrolledWindow scrollbar not working

I have the following child-parent relasions in my application:

enter image description here

The problem is that there is no visible ( or working ) scrollbar in wxScrolledWindow.

Code:

wxCollapsiblePane* collpane = new wxCollapsiblePane(this, ID_COLLPANE, "Tiles\t\t\t\t", wxDefaultPosition, wxDefaultSize, wxCP_NO_TLW_RESIZE);
wxSizer* sz = new wxBoxSizer(wxVERTICAL);
sz->Add(collpane,0,wxALIGN_RIGHT,10);
SetSizer(sz);
wxWindow* cPane = collpane->GetPane();
wxSizer* panesz = new wxBoxSizer(wxVERTICAL);
wxBitmap pic("test.bmp",wxBITMAP_TYPE_BMP);
wxScrolledWindow* scr = new wxScrolledWindow(cPane,ID_PANEL,wxDefaultPosition, wxSize(150,300));
scr->SetScrollbars(2,2,10,10);
wxClientDC dc(this);
scr->DoPrepareDC(dc);
panesz->Add( new wxBitmapButton(scr,-1,pic, wxDefaultPosition, wxSize(50,50) ), 1,  wxALIGN_CENTER, 0 );
/* more button adding here */
cPane->SetSizer(panesz);
panesz->SetSizeHints(cPane);

How can I get the scrollbar to show and scroll the buttons?

Solution

  • To have scrollbars you need to indicate to wxScrolledWindow its full logical (as opposed to possibly smaller physical) size using SetVirtualSize() method. This can be done either just by calling it directly or by associating a sizer with the scrolled window, adding elements to this sizer and calling FitInside().