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