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wscitecm.cpp
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wscitecm.cpp
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//---------------------------------------------------------------------------
// See LICENSE
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// wscitecm.cpp
// Defines the entry point for the DLL application.
//---------------------------------------------------------------------------
#ifndef STRICT
#define STRICT
#endif
#define INC_OLE2
#include <windows.h>
#include <windowsx.h>
#include <shlobj.h>
#define GUID_SIZE 128
#define MAX_FILES 10
#define MAX_CMDSTR (MAX_PATH * MAX_FILES)
#define ResultFromShort(i) ResultFromScode(MAKE_SCODE(SEVERITY_SUCCESS, 0, (USHORT)(i)))
#pragma data_seg(".text")
#define INITGUID
#include <initguid.h>
#include <shlguid.h>
#include "resource.h"
#include "wscitecm.h"
#pragma data_seg()
//---------------------------------------------------------------------------
// Global variables
//---------------------------------------------------------------------------
UINT _cRef = 0; // COM Reference count.
HINSTANCE _hModule = NULL; // DLL Module.
typedef struct{
HKEY hRootKey;
LPTSTR szSubKey;
LPTSTR lpszValueName;
LPTSTR szData;
} DOREGSTRUCT, *LPDOREGSTRUCT;
char szSciTEName[] = "SciTE.exe";
char szShellExtensionTitle[] = "SciTE";
BOOL RegisterServer(CLSID, LPTSTR);
BOOL UnregisterServer(CLSID, LPTSTR);
void MsgBox(LPTSTR);
void MsgBoxDebug(LPTSTR);
void MsgBoxError(LPTSTR);
//---------------------------------------------------------------------------
// DllMain
//---------------------------------------------------------------------------
extern "C" int APIENTRY
DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved) {
if (dwReason == DLL_PROCESS_ATTACH) {
_hModule = hInstance;
}
return 1;
}
//---------------------------------------------------------------------------
// DllCanUnloadNow
//---------------------------------------------------------------------------
STDAPI DllCanUnloadNow(void) {
return (_cRef == 0 ? S_OK : S_FALSE);
}
//---------------------------------------------------------------------------
// DllGetClassObject
//---------------------------------------------------------------------------
STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppvOut) {
*ppvOut = NULL;
if (IsEqualIID(rclsid, CLSID_ShellExtension)) {
CShellExtClassFactory *pcf = new CShellExtClassFactory;
return pcf->QueryInterface(riid, ppvOut);
}
return CLASS_E_CLASSNOTAVAILABLE;
}
//---------------------------------------------------------------------------
// DllRegisterServer
//---------------------------------------------------------------------------
STDAPI DllRegisterServer() {
return (RegisterServer(CLSID_ShellExtension, szShellExtensionTitle) ? S_OK : E_FAIL);
}
//---------------------------------------------------------------------------
// DllUnregisterServer
//---------------------------------------------------------------------------
STDAPI DllUnregisterServer(void) {
return (UnregisterServer(CLSID_ShellExtension, szShellExtensionTitle) ? S_OK : E_FAIL);
}
//---------------------------------------------------------------------------
// CheckSciTE
//---------------------------------------------------------------------------
BOOL CheckSciTE() {
TCHAR szModuleFullName[MAX_PATH];
TCHAR szExeFullName[MAX_PATH];
int nLenPath = 0;
TCHAR* pDest;
LPTSTR *lpFilePart = NULL;
GetModuleFileName(_hModule, szModuleFullName, MAX_PATH);
pDest = strrchr(szModuleFullName, '\\' );
pDest++;
pDest[0] = 0;
DWORD dw = SearchPath(szModuleFullName, szShellExtensionTitle, ".exe", MAX_PATH, szExeFullName, lpFilePart);
return (dw ? TRUE : FALSE);
}
//---------------------------------------------------------------------------
// RegisterServer
//---------------------------------------------------------------------------
BOOL RegisterServer(CLSID clsid, LPTSTR lpszTitle) {
int i;
HKEY hKey;
LRESULT lResult;
DWORD dwDisp;
TCHAR szSubKey[MAX_PATH];
TCHAR szCLSID[MAX_PATH];
TCHAR szModule[MAX_PATH];
LPWSTR pwsz;
if (!CheckSciTE()) {
MsgBoxError("To register the SciTE context menu extension,\r\ninstall wscitecm.dll in the same directory than SciTE.exe.");
return FALSE;
}
StringFromIID(clsid, &pwsz);
if(pwsz) {
#ifdef UNICODE
lstrcpy(szCLSID, pwsz);
#else
WideCharToMultiByte(CP_ACP, 0, pwsz, -1, szCLSID, ARRAYSIZE(szCLSID), NULL, NULL);
#endif
//free the string
LPMALLOC pMalloc;
CoGetMalloc(1, &pMalloc);
pMalloc->Free(pwsz);
pMalloc->Release();
}
//get this app's path and file name
GetModuleFileName(_hModule, szModule, MAX_PATH);
DOREGSTRUCT ClsidEntries[] = {
HKEY_CLASSES_ROOT, TEXT("CLSID\\%s"), NULL, lpszTitle,
HKEY_CLASSES_ROOT, TEXT("CLSID\\%s\\InprocServer32"), NULL, szModule,
HKEY_CLASSES_ROOT, TEXT("CLSID\\%s\\InprocServer32"), TEXT("ThreadingModel"), TEXT("Apartment"),
HKEY_CLASSES_ROOT, TEXT("*\\shellex\\ContextMenuHandlers\\SciTE"), NULL, szCLSID,
NULL, NULL, NULL, NULL
};
// Register the CLSID entries
for(i = 0; ClsidEntries[i].hRootKey; i++) {
// Create the sub key string - for this case, insert the file extension
wsprintf(szSubKey, ClsidEntries[i].szSubKey, szCLSID);
lResult = RegCreateKeyEx(ClsidEntries[i].hRootKey, szSubKey, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, &dwDisp);
if(NOERROR == lResult) {
TCHAR szData[MAX_PATH];
// If necessary, create the value string
wsprintf(szData, ClsidEntries[i].szData, szModule);
lResult = RegSetValueEx(hKey, ClsidEntries[i].lpszValueName, 0, REG_SZ, (LPBYTE)szData, (lstrlen(szData) + 1) * sizeof(TCHAR));
RegCloseKey(hKey);
}
else
return FALSE;
}
return TRUE;
}
//---------------------------------------------------------------------------
// UnregisterServer
//---------------------------------------------------------------------------
BOOL UnregisterServer(CLSID clsid, LPTSTR lpszTitle) {
TCHAR szCLSID[GUID_SIZE + 1];
TCHAR szCLSIDKey[GUID_SIZE + 32];
TCHAR szKeyTemp[MAX_PATH + GUID_SIZE];
LPWSTR pwsz;
StringFromIID(clsid, &pwsz);
if(pwsz) {
#ifdef UNICODE
lstrcpy(szCLSID, pwsz);
#else
WideCharToMultiByte(CP_ACP, 0, pwsz, -1, szCLSID, ARRAYSIZE(szCLSID), NULL, NULL);
#endif
//free the string
LPMALLOC pMalloc;
CoGetMalloc(1, &pMalloc);
pMalloc->Free(pwsz);
pMalloc->Release();
}
lstrcpy(szCLSIDKey, TEXT("CLSID\\"));
lstrcat(szCLSIDKey, szCLSID);
wsprintf(szKeyTemp, TEXT("*\\shellex\\ContextMenuHandlers\\%s"), lpszTitle);
RegDeleteKey(HKEY_CLASSES_ROOT, szKeyTemp);
wsprintf(szKeyTemp, TEXT("%s\\%s"), szCLSIDKey, TEXT("InprocServer32"));
RegDeleteKey(HKEY_CLASSES_ROOT, szKeyTemp);
RegDeleteKey(HKEY_CLASSES_ROOT, szCLSIDKey);
return TRUE;
}
//---------------------------------------------------------------------------
// MsgBoxDebug
//---------------------------------------------------------------------------
void MsgBoxDebug(LPTSTR lpszMsg) {
MessageBox(NULL,
lpszMsg,
"DEBUG",
MB_OK);
}
//---------------------------------------------------------------------------
// MsgBox
//---------------------------------------------------------------------------
void MsgBox(LPTSTR lpszMsg) {
MessageBox(NULL,
lpszMsg,
"SciTE Extension",
MB_OK);
}
//---------------------------------------------------------------------------
// MsgBoxError
//---------------------------------------------------------------------------
void MsgBoxError(LPTSTR lpszMsg) {
MessageBox(NULL,
lpszMsg,
"SciTE Extension",
MB_OK | MB_ICONSTOP);
}
//---------------------------------------------------------------------------
// CShellExtClassFactory
//---------------------------------------------------------------------------
CShellExtClassFactory::CShellExtClassFactory() {
m_cRef = 0L;
_cRef++;
}
CShellExtClassFactory::~CShellExtClassFactory() {
_cRef--;
}
STDMETHODIMP CShellExtClassFactory::QueryInterface(REFIID riid, LPVOID FAR *ppv) {
*ppv = NULL;
if (IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IClassFactory)) {
*ppv = (LPCLASSFACTORY)this;
AddRef();
return NOERROR;
}
return E_NOINTERFACE;
}
STDMETHODIMP_(ULONG) CShellExtClassFactory::AddRef() {
return ++m_cRef;
}
STDMETHODIMP_(ULONG) CShellExtClassFactory::Release()
{
if (--m_cRef)
return m_cRef;
delete this;
return 0L;
}
STDMETHODIMP CShellExtClassFactory::CreateInstance(LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObj) {
*ppvObj = NULL;
if (pUnkOuter)
return CLASS_E_NOAGGREGATION;
LPCSHELLEXT pShellExt = new CShellExt();
if (NULL == pShellExt)
return E_OUTOFMEMORY;
return pShellExt->QueryInterface(riid, ppvObj);
}
STDMETHODIMP CShellExtClassFactory::LockServer(BOOL fLock) {
return NOERROR;
}
//---------------------------------------------------------------------------
// CShellExt
//---------------------------------------------------------------------------
CShellExt::CShellExt() {
m_cRef = 0L;
m_pDataObj = NULL;
_cRef++;
m_hSciteBmp = LoadBitmap(_hModule, MAKEINTRESOURCE(IDB_SCITE));
HRESULT hr;
hr = SHGetMalloc(&m_pAlloc);
if (FAILED(hr))
m_pAlloc = NULL;
}
CShellExt::~CShellExt() {
if (m_pDataObj)
m_pDataObj->Release();
_cRef--;
m_pAlloc->Release();
}
STDMETHODIMP CShellExt::QueryInterface(REFIID riid, LPVOID FAR *ppv) {
*ppv = NULL;
if (IsEqualIID(riid, IID_IShellExtInit) || IsEqualIID(riid, IID_IUnknown)) {
*ppv = (LPSHELLEXTINIT)this;
}
else if (IsEqualIID(riid, IID_IContextMenu)) {
*ppv = (LPCONTEXTMENU)this;
}
if (*ppv) {
AddRef();
return NOERROR;
}
return E_NOINTERFACE;
}
STDMETHODIMP_(ULONG) CShellExt::AddRef() {
return ++m_cRef;
}
STDMETHODIMP_(ULONG) CShellExt::Release() {
if (--m_cRef)
return m_cRef;
delete this;
return 0L;
}
STDMETHODIMP CShellExt::Initialize(LPCITEMIDLIST pIDFolder, LPDATAOBJECT pDataObj, HKEY hRegKey) {
HRESULT hres = 0;
if (m_pDataObj)
m_pDataObj->Release();
if (pDataObj) {
m_pDataObj = pDataObj;
pDataObj->AddRef();
}
return NOERROR;
}
STDMETHODIMP CShellExt::QueryContextMenu(HMENU hMenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags) {
UINT idCmd = idCmdFirst;
BOOL bAppendItems=TRUE;
char szItemSciTE[]="Edit with &SciTE";
FORMATETC fmte = {
CF_HDROP,
(DVTARGETDEVICE FAR *)NULL,
DVASPECT_CONTENT,
-1,
TYMED_HGLOBAL
};
HRESULT hres = m_pDataObj->GetData(&fmte, &m_stgMedium);
if (SUCCEEDED(hres)) {
if (m_stgMedium.hGlobal)
m_cbFiles = DragQueryFile((HDROP)m_stgMedium.hGlobal, (UINT)-1, 0, 0);
}
UINT nIndex = indexMenu++;
InsertMenu(hMenu, nIndex, MF_STRING|MF_BYPOSITION, idCmd++, szItemSciTE);
if (m_hSciteBmp) {
SetMenuItemBitmaps (hMenu, nIndex, MF_BYPOSITION, m_hSciteBmp, m_hSciteBmp);
}
return ResultFromShort(idCmd-idCmdFirst);
}
STDMETHODIMP CShellExt::InvokeCommand(LPCMINVOKECOMMANDINFO lpcmi) {
HRESULT hr = E_INVALIDARG;
if (!HIWORD(lpcmi->lpVerb)) {
UINT idCmd = LOWORD(lpcmi->lpVerb);
switch(idCmd) {
case 0:
hr = InvokeSciTE(lpcmi->hwnd, lpcmi->lpDirectory, lpcmi->lpVerb, lpcmi->lpParameters, lpcmi->nShow);
break;
}
}
return hr;
}
STDMETHODIMP CShellExt::GetCommandString(UINT_PTR idCmd, UINT uFlags, UINT FAR *reserved, LPSTR pszName, UINT cchMax) {
if (uFlags == GCS_HELPTEXT && cchMax > 35)
lstrcpy(pszName, "Edits the selected file(s) with SciTE");
return NOERROR;
}
static void getSciTEName(char *name) {
TCHAR szModuleFullName[MAX_PATH];
int nLenPath = 0;
TCHAR* pDest;
name[0] = 0;
GetModuleFileName(_hModule, szModuleFullName, MAX_PATH);
pDest = strrchr(szModuleFullName, '\\' );
pDest++;
pDest[0] = 0;
strcpy_s(name, MAX_PATH, szModuleFullName);
strcat_s(name, MAX_PATH, szSciTEName);
if (name[0] == 0)
strcpy_s(name, MAX_PATH, szSciTEName);
}
STDMETHODIMP CShellExt::InvokeSciTE(HWND hParent, LPCSTR pszWorkingDir, LPCSTR pszCmd, LPCSTR pszParam, int iShowCmd) {
TCHAR szFileUserClickedOn[MAX_PATH];
LPTSTR pszCommand;
UINT nSizeCommand;
UINT i;
FORMATETC fmte = {
CF_HDROP,
(DVTARGETDEVICE FAR *)NULL,
DVASPECT_CONTENT,
-1,
TYMED_HGLOBAL
};
nSizeCommand = MAX_PATH * (m_cbFiles + 1) * sizeof(TCHAR);
pszCommand = (LPTSTR)m_pAlloc->Alloc(nSizeCommand);
if (pszCommand)
getSciTEName(pszCommand);
else {
MsgBoxError("Insufficient memory available.");
return E_FAIL;
}
for (i = 0; i < m_cbFiles; i++) {
DragQueryFile((HDROP)m_stgMedium.hGlobal, i, szFileUserClickedOn, MAX_PATH);
strcat_s(pszCommand, nSizeCommand, " \"");
strcat_s(pszCommand, nSizeCommand, szFileUserClickedOn);
strcat_s(pszCommand, nSizeCommand, "\"");
}
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = SW_RESTORE;
if (!CreateProcess (NULL, pszCommand, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi)) {
MessageBox(hParent,
"Error creating process: wscitecm.dll needs to be in the same directory as SciTE.exe",
"SciTE Extension",
MB_OK);
}
m_pAlloc->Free(pszCommand);
return NOERROR;
}