Windows核心编程学习一：使用DialogBoxParam显示模式

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/******************************************************************************* * File:FirstTry.cpp * Author:guzhoudiaoke@126.com * Time:2013-04-14 * 描述：主要尝试使用DialogBoxParam函数显式一个对话框 *******************************************************************************/ #include <Windows.h> #include <Windowsx.h> #include <tchar.h> #include "Resource.h" /* SetDlgMsgResult This macro maps to the SetWindowLong function. * SetWindowLong changes an attribute of the specified window, also sets a 32-bit (LONG) * value at the specified offset into the extra window memory of a window. * The normal HANDLE_MSG macro in WindowsX.h does not work properly for dialog * boxes because DlgProc returns a BOOL instead of an LRESULT (likeWndProcs). * This chHANDLE_DLGMSG macro corrects the problem. */ #define chHANDLE_DLGMSG(hWnd, message, fn) \ case (message): return (SetDlgMsgResult(hWnd, uMsg, \ HANDLE_##message((hWnd), (wParam), (lParam), (fn)))) void Dlg_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify) { switch (id) { case IDCANCEL: EndDialog(hwnd, id); break; } } // 对话框过程函数 INT_PTR WINAPI Dlg_Proc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch (uMsg) { chHANDLE_DLGMSG(hwnd, WM_COMMAND, Dlg_OnCommand); } return FALSE; } int WINAPI _tWinMain(HINSTANCE hinstExe, HINSTANCE, PTSTR pszCmdLine, int) { dialogboxparam(hinstExe, MAKEINTRESOURCE(IDD_FIRSTTRY), NULL, Dlg_Proc, _ttoi(pszCmdLine)); return 0; }
其中chHANDLE_DLGMSG是原书作者对HANDLE_MSG的改进，。

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