///////////////////////////////////////////////////////////////////////////// // 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 DECLARE_EVENT_TABLE() }; enum { ID_Quit = wxID_EXIT, ID_About = wxID_ABOUT, ID_Write = 100, ID_Text = 101 }; BEGIN_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 END_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); }