描述:
#include "stdafx.h"
#include "ProSalaries.h"
#include "Selection.h"
//下面的结构体能这样用吗？没有见过，
//那位大虾能详细解释一下吗？
// Initialization of OLE
struct InitOle {
InitOle() { ::CoInitialize(NULL); }
~InitOle() { ::CoUninitialize(); }
} _init_InitOle_; // Global Instance to force load/unload of OLE
HICON g_Icon;
/////////////////////////////////////////////////////////////////////////////
// CProSalariesApp
BEGIN_MESSAGE_MAP(CProSalariesApp, CWinApp)
//{{AFX_MSG_MAP(CProSalariesApp)
// NOTE - the ClassWizard will add and remove mapping macros here.
// DO NOT EDIT what you see in these blocks of generated code!
//}}AFX_MSG
ON_COMMAND(ID_HELP, CWinApp::OnHelp)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CProSalariesApp construction
CProSalariesApp::CProSalariesApp()
{
}
/////////////////////////////////////////////////////////////////////////////
// The one and only CProSalariesApp object
CProSalariesApp theApp;
/////////////////////////////////////////////////////////////////////////////
// CProSalariesApp initialization
BOOL CProSalariesApp::InitInstance()
{
AfxEnableControlContainer();
// Standard initialization
#ifdef _AFXDLL
Enable3dControls(); // Call this when using MFC in a shared DLL
#else
Enable3dControlsStatic(); // Call this when linking to MFC statically
#endif
g_Icon = LoadIcon(MAKEINTRESOURCE(IDR_MAINFRAME));
CSelection dlg;
m_pMainWnd = &dlg;
int nResponse = dlg.DoModal();
if (nResponse == IDOK)
{
// No Code necessary -- just exit the program
}
// Since the dialog has been closed, return FALSE so that we exit the
// application, rather than start the application's message pump.
return FALSE;
}
解决方案1:
可以这样用呀，结构除了默认的public/private声明和类不一样，其它没什么区别。
这样写就是在程序加载时
建立一个_init_InitOle_变量，同时调用结构的构造函数初始化COM环境
程序结束时调用析构函数。