129 lines
3.2 KiB
C++
129 lines
3.2 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
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// Name: dllwidget.cpp
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// Purpose: Dynamically loadable C++ widget for wxPython
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// Author: Vaclav Slavik
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// Created: 2001/12/03
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// RCS-ID: $Id$
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// Copyright: (c) 2001 Vaclav Slavik
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "dllwidget.h"
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#endif
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "wx/defs.h"
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#include "wx/dynlib.h"
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#include "wx/sizer.h"
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#include "dllwidget.h"
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IMPLEMENT_ABSTRACT_CLASS(wxDllWidget, wxPanel)
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wxDllWidget::wxDllWidget(wxWindow *parent,
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wxWindowID id,
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const wxString& dllName, const wxString& className,
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const wxPoint& pos, const wxSize& size,
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long style)
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: wxPanel(parent, id, pos, size, wxTAB_TRAVERSAL | wxNO_BORDER,
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className + wxT("_container")),
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m_widget(NULL), m_lib(NULL), m_controlAdded(FALSE)
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{
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SetBackgroundColour(wxColour(255, 0, 255));
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if ( !!className )
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LoadWidget(dllName, className, style);
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}
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wxDllWidget::~wxDllWidget()
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{
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UnloadWidget();
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}
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void wxDllWidget::AddChild(wxWindowBase *child)
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{
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wxASSERT_MSG( !m_controlAdded, wxT("Couldn't load two widgets into one container!") )
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wxPanel::AddChild(child);
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m_controlAdded = TRUE;
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wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
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sizer->Add((wxWindow*)child, 1, wxEXPAND);
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SetSizer(sizer);
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SetAutoLayout(TRUE);
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Layout();
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}
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wxString wxDllWidget::GetDllExt()
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{
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return wxDllLoader::GetDllExt();
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}
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typedef WXDLLEXPORT bool (*DLL_WidgetFactory_t)(const wxString& className,
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wxWindow *parent,
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long style,
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wxWindow **classInst,
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wxSendCommandFunc *cmdFunc);
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bool wxDllWidget::LoadWidget(const wxString& dll, const wxString& className,
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long style)
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{
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UnloadWidget();
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// Load the dynamic library
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m_lib = new wxDynamicLibrary(dll);
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if ( !m_lib->IsLoaded() )
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{
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delete m_lib;
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m_lib = NULL;
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return FALSE;
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}
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DLL_WidgetFactory_t factory;
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factory = (DLL_WidgetFactory_t) m_lib->GetSymbol(wxT("DLL_WidgetFactory"));
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if ( factory == NULL)
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{
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delete m_lib;
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m_lib = NULL;
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return FALSE;
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}
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if ( !factory(className, this, style, &m_widget, &m_cmdFunc) )
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{
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delete m_widget;
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delete m_lib;
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m_lib = NULL;
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m_widget = NULL;
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return FALSE;
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}
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return TRUE;
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}
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void wxDllWidget::UnloadWidget()
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{
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if ( m_widget )
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{
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DestroyChildren();
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m_widget = NULL;
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delete m_lib;
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m_lib = NULL;
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}
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}
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int wxDllWidget::SendCommand(int cmd, const wxString& param)
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{
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wxASSERT_MSG( m_widget && m_cmdFunc, wxT("Sending command to not loaded widget!"));
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return m_cmdFunc(m_widget, cmd, param);
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}
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