VCMFC 设置程序与文件关联与双击文件获取文件路径

如何设置程序与文件关联并且双击关联文件时获取文件的路径呢？

一般来说可以通过写注册表的方式实现，在函数入口处实现功能。

例如在VC/MFC中，可以在应用程序的C**App.cpp文件中InitInstance()函数中实现该功能。

#include <string>

using namespace std;

//关联文件的后缀名，如"txt"、"doc"等

string m_csExtension;string m_csShellOpenCommand;

string m_csDocumentShellOpenCommand;

//注册表中文件夹类名

string m_csDocumentClassName;

//关联文件的默认图标string m_csDocumentDefaultIcon;

 

///赋值函数//

void SetExtension( LPCTSTR szExtension ){m_csExtension = szExtension;}

void SetShellOpenCommand( LPCTSTR szShellOpenCommand )

{m_csShellOpenCommand = szShellOpenCommand;}

void SetDocumentShellOpenCommand( LPCTSTR szDocumentShellOpenCommand )

{m_csDocumentShellOpenCommand = szDocumentShellOpenCommand;}

void SetDocumentClassName( LPCTSTR szDocumentClassName )

{m_csDocumentClassName = szDocumentClassName;}

void SetDocumentDefaultIcon( LPCTSTR szDocumentDefaultIcon )

{m_csDocumentDefaultIcon = szDocumentDefaultIcon;}

///赋值函数//

 

//关键函数：实现写注册表的函数

BOOL SetRegistryValue(HKEY hOpenKey,LPCTSTR szKey,LPCTSTR szValue,LPCTSTR szData){// validate inputif( !hOpenKey || !szKey || !szKey[0] ||!szValue || !szData ){::SetLastError(E_INVALIDARG);return FALSE;}

BOOL bRetVal = FALSE;DWORD dwDisposition;DWORD dwReserved = 0;HKEY hTempKey = (HKEY)0;

// length specifier is in bytes, and some TCHAR// are more than 1 byte eachDWORD dwBufferLength = lstrlen(szData) * sizeof(TCHAR);

// Open key of interest// Assume all access is okay and that all keys will be stored to file// Utilize the default security attributesif( ERROR_SUCCESS == ::RegCreateKeyEx(hOpenKey, szKey, dwReserved,(LPTSTR)0, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, 0,&hTempKey, &dwDisposition) ){// dwBufferLength must include size of terminating nul// character when using REG_SZ with RegSetValueEx functiondwBufferLength += sizeof(TCHAR);if( ERROR_SUCCESS == ::RegSetValueEx(hTempKey, (LPTSTR)szValue,dwReserved, REG_SZ, (LPBYTE)szData, dwBufferLength) ){bRetVal = TRUE;}}

// close opened keyif( hTempKey ){::RegCloseKey(hTempKey);}

return bRetVal;}

 

BOOL RegSetExtension(void){if( m_csExtension.empty() ){return FALSE;}

std::string csKey = "." + m_csExtension;

SetRegistryValue(HKEY_CLASSES_ROOT, csKey.c_str(), "", m_csDocumentClassName.c_str());

if( !m_csShellOpenCommand.empty() ){csKey += "//shell//open//command";SetRegistryValue(HKEY_CLASSES_ROOT, csKey.c_str(), "", m_csShellOpenCommand.c_str());}

return TRUE;}

 

BOOL RegSetDocumentType(void){if( m_csDocumentClassName.empty()){return FALSE;}

std::string csKey = m_csDocumentClassName;

SetRegistryValue(HKEY_CLASSES_ROOT, csKey.c_str(), "", m_csDocumentDescription.c_str());

// DefaultIconif( !m_csDocumentDefaultIcon.empty() ){csKey = m_csDocumentClassName;csKey += "//DefaultIcon";SetRegistryValue(HKEY_CLASSES_ROOT, csKey.c_str(), "", m_csDocumentDefaultIcon.c_str());}

// shell/open/commandif( !m_csShellOpenCommand.empty() ){csKey = m_csDocumentClassName;csKey += "//shell//open//command";SetRegistryValue(HKEY_CLASSES_ROOT, csKey.c_str(), "", m_csShellOpenCommand.c_str());}

return TRUE;}

 

BOOL RegSetAllInfo(void){RegSetExtension();RegSetDocumentType();

return TRUE;}

 

//注册程序与文件后缀名的关联void RegisterFileAndProgram(){

一个应用程序与多个文件后缀关联#define strExternsionLength 4

LPCTSTR strExtension[] ={"bmp","jpg","jpe","jpeg"};

CGCFileTypeAccess TheFTA;

TCHAR szProgPath[MAX_PATH * 2];

//获取程序路径

::GetModuleFileName(NULL, szProgPath, sizeof(szProgPath)/sizeof(TCHAR));

CString csTempText;

for(int i = 0; i < strExternsionLength; ++i){

//设置程序需要关联的后缀名,如"txt" "doc" 等

SetExtension(strExtension[i]);

csTempText.Format("/"%s/" %s",szProgPath,"/"%1/"");

SetShellOpenCommand(csTempText);

SetDocumentShellOpenCommand(csTempText);

//设置注册表中文件类的别名，例如可以是程序名称:**.exe

SetDocumentClassName("**");

// use first icon in program

csTempText = szProgPath;

csTempText += ",0";

SetDocumentDefaultIcon(csTempText);

RegSetAllInfo();

}

}

 

//入口函数：初始化所需的操作

BOOL C**App::InitInstance()

{

//

//***Code***

//注册程序与文件后缀名的关联RegisterFileAndProgram();

// 分析标准外壳命令、DDE、打开文件操作的命令行CCommandLineInfo cmdInfo;ParseCommandLine(cmdInfo);//获取命令行传过来的参数：双击打开的文件的文件路径名称CString strFilePathName = cmdInfo.m_strFileName;

// 调度在命令行中指定的命令。如果// 用 /RegServer、/Register、/Unregserver 或 /Unregister 启动应用程序，则返回 FALSE。if (!ProcessShellCommand(cmdInfo))return FALSE;

//

//通过获取的strFilePathName文件名称实现相关操作//

//Add code here//

return TRUE;

}