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.
167 lines
4.6 KiB
C++
167 lines
4.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: samples/dll/my_exe.cpp
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// Purpose: Sample showing how to use wx DLL from a Win32 application
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// Author: Vadim Zeitlin
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// Created: 2009-12-07
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// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/*
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This program is intentionally as simple as possible and shouldn't be seen
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as an example of how to write a proper Win32 application (why should you
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want to do this anyhow when you have wxWidgets). It's just a test bed for
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the wx DLL which it uses.
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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 <windows.h>
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#include <windowsx.h>
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#include <stdio.h>
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#include <tchar.h>
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#include "my_dll.h"
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namespace
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{
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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const TCHAR *MAIN_WIN_CLASS_NAME = _TEXT("my_exe_main_win_class");
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const INT_PTR IDB_RUN_GUI_FROM_DLL = 100;
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// ----------------------------------------------------------------------------
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// globals
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// ----------------------------------------------------------------------------
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HINSTANCE g_hInstance;
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HWND g_hwndMain;
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// callbacks
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// ----------------------------------------------------------------------------
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void
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OnCommand(HWND /* hwnd */, int id, HWND /* hwndCtl */, UINT /* codeNotify */)
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{
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if ( id == IDB_RUN_GUI_FROM_DLL )
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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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void OnDestroy(HWND /* hwnd */)
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{
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wx_dll_cleanup();
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PostQuitMessage(0);
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}
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LRESULT CALLBACK MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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switch ( msg )
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{
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HANDLE_MSG(hwnd, WM_COMMAND, OnCommand);
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HANDLE_MSG(hwnd, WM_DESTROY, OnDestroy);
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default:
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return DefWindowProc(hwnd, msg, wParam, lParam);
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}
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}
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// ----------------------------------------------------------------------------
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// initialization functions
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// ----------------------------------------------------------------------------
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bool RegisterMainClass()
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{
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WNDCLASS wc;
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ZeroMemory(&wc, sizeof(wc));
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wc.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
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wc.lpfnWndProc = MainWndProc;
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wc.hInstance = g_hInstance;
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wc.hIcon = LoadIcon(nullptr, IDI_APPLICATION);
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wc.hCursor = LoadCursor(nullptr, IDC_ARROW);
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wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
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wc.lpszClassName = MAIN_WIN_CLASS_NAME;
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return RegisterClass(&wc) != 0;
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}
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bool CreateMainWindow()
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{
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g_hwndMain = CreateWindow
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(
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MAIN_WIN_CLASS_NAME,
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_TEXT("Main Win32 app"),
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WS_OVERLAPPEDWINDOW,
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CW_USEDEFAULT, CW_USEDEFAULT,
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400, 300,
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nullptr, nullptr, g_hInstance, nullptr
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);
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if ( !g_hwndMain )
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return false;
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CreateWindow
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(
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_TEXT("static"),
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_TEXT("Main Win32 application"),
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WS_CHILD | WS_VISIBLE,
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10, 10, 200, 30,
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g_hwndMain, (HMENU)-1, g_hInstance, nullptr
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);
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CreateWindow
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(
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_TEXT("button"),
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_TEXT("Run GUI from DLL"),
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WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON,
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200, 200, 150, 35,
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g_hwndMain, (HMENU)IDB_RUN_GUI_FROM_DLL, g_hInstance, nullptr
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);
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return true;
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}
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} // anonymous namespace
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// ----------------------------------------------------------------------------
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// entry point
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// ----------------------------------------------------------------------------
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int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int nCmdShow)
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{
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g_hInstance = hInstance;
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if ( !RegisterMainClass() )
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return 1;
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if ( !CreateMainWindow() )
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return 2;
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ShowWindow(g_hwndMain, nCmdShow);
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MSG msg;
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while ( GetMessage(&msg, nullptr, 0, 0) )
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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return 0;
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}
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