142 lines
4.5 KiB
C++
142 lines
4.5 KiB
C++
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#include "stdafx.h"
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#include "dsplex.h"
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#include "DisplEx.h"
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extern HINSTANCE g_hinst; // in dsplex.cpp
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// local function
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LPOLESTR CoTaskDupString (LPOLESTR szString)
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{
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OLECHAR * lpString = (OLECHAR *)CoTaskMemAlloc (sizeof(OLECHAR)*(lstrlen(szString)+1));
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if (lpString)
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lstrcpy (lpString, szString);
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return lpString;
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}
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CEnumTasks::CEnumTasks()
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{
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m_refs = 0;
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m_index = 0;
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}
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CEnumTasks::~CEnumTasks()
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{
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}
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HRESULT CEnumTasks::QueryInterface (REFIID riid, LPVOID FAR* ppv)
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{
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if ( (riid == IID_IUnknown) ||
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(riid == IID_IEnumTASK) ){
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*ppv = this;
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((LPUNKNOWN)(*ppv))->AddRef();
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return NOERROR;
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}
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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ULONG CEnumTasks::AddRef ()
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{
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return ++m_refs;
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}
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ULONG CEnumTasks::Release ()
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{
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if (--m_refs == 0) {
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delete this;
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return 0;
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}
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return m_refs;
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}
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#define NUMBER_OF_TASKS 1
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LPOLESTR g_bitmaps[NUMBER_OF_TASKS] = {L"/img\\ntmonitor.gif"};
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LPOLESTR g_text [NUMBER_OF_TASKS] = {L"Wallpaper Extension Task"};
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LPOLESTR g_help [NUMBER_OF_TASKS] = {L"Use Clipboard Image as Wallpaper (but just for testing purposes I'm going to make this a really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really long line\
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really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really really long line)"};
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long g_action [NUMBER_OF_TASKS] = {1};
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HRESULT CEnumTasks::Next (ULONG celt, MMC_TASK *rgelt, ULONG *pceltFetched)
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{//will be called with celt == 1
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_ASSERT (celt == 1);
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_ASSERT (!IsBadWritePtr (rgelt, celt*sizeof(MMC_TASK)));
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// wrong type.
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if (m_type != 1) {
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if (pceltFetched)
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*pceltFetched = 0;
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return S_FALSE; // failure
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}
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// setup path for reuse
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OLECHAR szBuffer[MAX_PATH*2]; // that should be enough
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lstrcpy (szBuffer, L"res://");
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::GetModuleFileName (g_hinst, szBuffer + lstrlen(szBuffer), MAX_PATH);
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OLECHAR * temp = szBuffer + lstrlen(szBuffer);
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if (m_index >= NUMBER_OF_TASKS) {
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if (pceltFetched)
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*pceltFetched = 0;
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return S_FALSE; // failure
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}
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MMC_TASK * task = &rgelt[0];
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MMC_TASK_DISPLAY_OBJECT* pdo = &task->sDisplayObject;
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MMC_TASK_DISPLAY_BITMAP* pdb = &pdo->uBitmap;
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// fill out bitmap URL
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pdo->eDisplayType = MMC_TASK_DISPLAY_TYPE_BITMAP;
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lstrcpy (temp, g_bitmaps[m_index]);
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pdb->szMouseOverBitmap = CoTaskDupString (szBuffer);
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if (pdb->szMouseOverBitmap) {
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pdb->szMouseOffBitmap = CoTaskDupString (szBuffer);
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if (pdb->szMouseOffBitmap) {
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// add button text
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task->szText = CoTaskDupString (g_text[m_index]);
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if (task->szText) {
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// add help string
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task->szHelpString = CoTaskDupString (g_help[m_index]);
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if (task->szHelpString) {
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// add action URL (link or script)
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task->eActionType = MMC_ACTION_ID;
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task->nCommandID = g_action[m_index];
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m_index++;
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if (pceltFetched)
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*pceltFetched = 1;
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return S_OK;
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}
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CoTaskMemFree (task->szText);
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}
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CoTaskMemFree (pdb->szMouseOffBitmap);
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}
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CoTaskMemFree (pdb->szMouseOverBitmap);
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}
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// if we get here, we didn't "continue" and therefore fail
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if (pceltFetched)
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*pceltFetched = 0;
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return S_FALSE; // failure
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}
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HRESULT CEnumTasks::Skip (ULONG celt)
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{
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m_index += celt;
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return S_OK;
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}
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HRESULT CEnumTasks::Reset()
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{
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m_index = 0;
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return S_OK;
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}
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HRESULT CEnumTasks::Clone(IEnumTASK **ppenum)
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{//clone maintaining state info
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return E_NOTIMPL;
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}
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HRESULT CEnumTasks::Init (IDataObject * pdo, LPOLESTR szTaskGroup)
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{ // return ok, if we can handle data object and group
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if (!lstrcmp (szTaskGroup, L""))
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m_type = 1; // default tasks
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return S_OK;
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}
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