4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
140 lines
3.5 KiB
C++
140 lines
3.5 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx_exe.cpp
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// Purpose: Sample showing how to use wx from a DLL
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// Author: Vaclav Slavik
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// Created: 2009-12-03
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// Copyright: (c) 2009 Vaclav Slavik
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/wxprec.h"
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#include "my_dll.h"
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#include "wx/app.h"
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#include "wx/frame.h"
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#include "wx/panel.h"
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#include "wx/sizer.h"
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#include "wx/stattext.h"
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#include "wx/button.h"
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#ifndef __WINDOWS__
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#error "This sample is Windows-only"
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#endif
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#ifdef WXUSINGDLL
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#error "This sample doesn't work with DLL build of wxWidgets"
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#endif
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// ----------------------------------------------------------------------------
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// GUI classes
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// ----------------------------------------------------------------------------
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static const int ID_RUN_DLL = wxNewId();
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class MainFrame : public wxFrame
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{
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public:
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MainFrame();
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void OnRunDLL(wxCommandEvent& event);
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wxDECLARE_EVENT_TABLE();
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};
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class MainApp : public wxApp
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{
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public:
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virtual bool OnInit() override;
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virtual int OnExit() override;
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};
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// MainFrame
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// ----------------------------------------------------------------------------
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wxBEGIN_EVENT_TABLE(MainFrame, wxFrame)
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EVT_BUTTON(ID_RUN_DLL, MainFrame::OnRunDLL)
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wxEND_EVENT_TABLE()
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MainFrame::MainFrame()
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: wxFrame(nullptr, wxID_ANY, "Main wx app",
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wxDefaultPosition, wxSize(400, 300))
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{
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wxPanel *p = new wxPanel(this, wxID_ANY);
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wxSizer *sizer = new wxBoxSizer(wxVERTICAL);
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sizer->Add
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(
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new wxStaticText
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(
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p, wxID_ANY,
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wxString::Format
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(
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"Main wxApp instance is %p (%s),\n"
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"thread ID %ld.\n",
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wxApp::GetInstance(),
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wxVERSION_STRING,
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wxThread::GetCurrentId()
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)
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),
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wxSizerFlags(1).Expand().Border(wxALL, 10)
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);
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sizer->Add
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(
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new wxButton(p, ID_RUN_DLL, "Run GUI from DLL"),
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wxSizerFlags(0).Right().Border(wxALL, 10)
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);
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p->SetSizerAndFit(sizer);
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wxSizer *fsizer = new wxBoxSizer(wxVERTICAL);
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fsizer->Add(p, wxSizerFlags(1).Expand());
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SetSizerAndFit(fsizer);
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}
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void MainFrame::OnRunDLL(wxCommandEvent& WXUNUSED(event))
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{
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run_wx_gui_from_dll("child instance");
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}
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// ----------------------------------------------------------------------------
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// MainApp
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// ----------------------------------------------------------------------------
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bool MainApp::OnInit()
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{
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if ( !wxApp::OnInit() )
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return false;
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wxFrame *f = new MainFrame();
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f->Show(true);
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return true;
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}
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int MainApp::OnExit()
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{
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wx_dll_cleanup();
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return wxApp::OnExit();
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}
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wxIMPLEMENT_APP(MainApp);
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