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/////////////////////////////////////////////////////////////////////////////
// Name: clipboard.cpp
// Purpose: clipboard wxWidgets sample
// Author: Robert Roebling
// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#include "wx/clipbrd.h"
#ifndef wxHAS_IMAGES_IN_RESOURCES
#include "../sample.xpm"
#endif
#define USE_ASYNCHRONOUS_CLIPBOARD_REQUEST 0
class MyApp : public wxApp
{
public:
virtual bool OnInit();
};
#if USE_ASYNCHRONOUS_CLIPBOARD_REQUEST
enum AsyncRequestState
{
Idle,
Waiting,
Finished
};
#endif
class MyFrame : public wxFrame
{
public:
MyFrame(const wxString& title);
void OnQuit(wxCommandEvent&event);
void OnAbout(wxCommandEvent&event);
void OnWriteClipboardContents(wxCommandEvent&event);
void OnUpdateUI(wxUpdateUIEvent&event);
#if USE_ASYNCHRONOUS_CLIPBOARD_REQUEST
void OnClipboardChange(wxClipboardEvent&event);
#endif
private:
wxTextCtrl *m_textctrl;
#if USE_ASYNCHRONOUS_CLIPBOARD_REQUEST
AsyncRequestState m_request;
bool m_clipboardSupportsText;
#endif
wxDECLARE_EVENT_TABLE();
};
enum
{
ID_Quit = wxID_EXIT,
ID_About = wxID_ABOUT,
ID_Write = 100,
ID_Text = 101
};
wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(ID_Quit, MyFrame::OnQuit)
EVT_MENU(ID_About, MyFrame::OnAbout)
EVT_BUTTON(ID_Write, MyFrame::OnWriteClipboardContents)
EVT_UPDATE_UI(ID_Write, MyFrame::OnUpdateUI)
#if USE_ASYNCHRONOUS_CLIPBOARD_REQUEST
EVT_CLIPBOARD_CHANGED(MyFrame::OnClipboardChange)
#endif
wxEND_EVENT_TABLE()
IMPLEMENT_APP(MyApp)
bool MyApp::OnInit()
{
if ( !wxApp::OnInit() )
return false;
MyFrame *frame = new MyFrame("wxClipboard sample");
frame->Show(true);
return true;
}
MyFrame::MyFrame(const wxString& title)
: wxFrame(NULL, wxID_ANY, title)
{
// set the frame icon
SetIcon(wxICON(sample));
#if USE_ASYNCHRONOUS_CLIPBOARD_REQUEST
m_request = Idle;
m_clipboardSupportsText = false;
#endif
#if wxUSE_MENUS
// create a menu bar
wxMenu *fileMenu = new wxMenu;
// the "About" item should be in the help menu
wxMenu *helpMenu = new wxMenu;
helpMenu->Append(ID_About, "&About\tF1", "Show about dialog");
fileMenu->Append(ID_Quit, "E&xit\tAlt-X", "Quit this program");
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar();
menuBar->Append(fileMenu, "&File");
menuBar->Append(helpMenu, "&Help");
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#endif // wxUSE_MENUS
wxPanel *panel = new wxPanel( this, -1 );
wxBoxSizer *main_sizer = new wxBoxSizer( wxVERTICAL );
main_sizer->Add( new wxButton( panel, ID_Write, "Get clipboard text" ), 0, wxALL, 5 );
m_textctrl = new wxTextCtrl( panel, ID_Text, "", wxDefaultPosition,
wxDefaultSize, wxTE_MULTILINE );
main_sizer->Add( m_textctrl, 1, wxGROW );
panel->SetSizer( main_sizer );
}
void MyFrame::OnWriteClipboardContents(wxCommandEvent& WXUNUSED(event))
{
if (wxTheClipboard->Open())
{
if (wxTheClipboard->IsSupported( wxDF_UNICODETEXT ))
{
wxTextDataObject data;
wxTheClipboard->GetData( data );
m_textctrl->Clear();
m_textctrl->SetValue( data.GetText() );
}
wxTheClipboard->Close();
}
}
#if USE_ASYNCHRONOUS_CLIPBOARD_REQUEST
void MyFrame::OnClipboardChange(wxClipboardEvent&event)
{
m_clipboardSupportsText = event.SupportsFormat( wxDF_UNICODETEXT );
m_request = Finished;
}
#endif
void MyFrame::OnUpdateUI(wxUpdateUIEvent&event)
{
#if USE_ASYNCHRONOUS_CLIPBOARD_REQUEST
if (m_request == Idle)
{
if (!wxTheClipboard->IsSupportedAsync( this ))
{
// request failed, try again later
event.Enable( m_clipboardSupportsText ); // not yet known, assume last value
return;
}
m_request = Waiting;
event.Enable( m_clipboardSupportsText ); // not yet known, assume last value
}
else if (m_request == Waiting)
{
event.Enable( m_clipboardSupportsText ); // not yet known, assume last value
}
else if (m_request == Finished)
{
event.Enable( m_clipboardSupportsText );
m_request = Idle;
}
#else
event.Enable( wxTheClipboard->IsSupported( wxDF_UNICODETEXT ) );
#endif
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox("Clipboard sample", "About clipboard", wxOK|wxICON_INFORMATION, this);
}
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