369 lines
12 KiB
C++
369 lines
12 KiB
C++
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// ctllist.cpp :
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#include "stdafx.h"
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extern "C" {
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#include <oidisp.h>
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#include <oierror.h>
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}
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#include <ocximage.h>
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#include "imgedit.h"
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extern CControlList *pControlList;
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extern BOOL bOutOfMemory;
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#ifdef _DEBUG
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#undef THIS_FILE
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static char BASED_CODE THIS_FILE[] = __FILE__;
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#endif
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// constructor for this class
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CControlList::CControlList()
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{
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DWORD size;
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DWORD dwCreateError;
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// set number of controls we can have. Not expandable at this time
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m_CurrentControlSize = INITIAL_CONTROL_SIZE;
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// open the memory mapped file to see if it exists yet.
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m_hControlMemoryMap = OpenFileMapping(FILE_MAP_READ, FALSE, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap == NULL)
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{
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// create memory mapped file. This will be the size of INITIAL_COUNT. The IMAGECONTROL_MEMORY_MAP structure
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// contains 1 IMAGECONTROLINFO structure so we need to allocate 1 IMAGECONTROL_MEMORY_MAP structure and
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// INITIAL_COUNT - 1 IMAGECONTROLINFO structures.
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// note: IMAGECONTROLINFO structure is same as IMAGECONTROL_MEMORY_MAP except for count member.
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size = sizeof(IMAGECONTROL_MEMORY_MAP) + ((INITIAL_CONTROL_SIZE - 1) * sizeof(IMAGECONTROLINFO));
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m_hControlMemoryMap = CreateFileMapping((HANDLE) 0xffffffff, NULL, PAGE_READWRITE, 0,
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size, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap != NULL)
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{
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dwCreateError = GetLastError();
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// get address space for memory mapped file
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m_lpControlMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) MapViewOfFile(m_hControlMemoryMap, FILE_MAP_WRITE, 0, 0, 0);
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if (m_lpControlMemoryMap == NULL)
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{
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CloseHandle(m_hControlMemoryMap);
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bOutOfMemory = TRUE;
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return;
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}
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// set initial count
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m_lpControlMemoryMap->ControlCount = 0;
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//NOTE it appears that file mapping behaves differently in NT
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//than it does in 95. In nt we have to do 1 openfilemapping
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//before the CloseHandle or CloseHandle removes the file from memory.
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HANDLE hImageControlMemoryMap = OpenFileMapping((DWORD)FILE_MAP_READ, FALSE, (LPCSTR)IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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}
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else
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{
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bOutOfMemory = TRUE;
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return;
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}
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}
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}
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// destructor
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CControlList::~CControlList()
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{
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m_hControlMemoryMap = OpenFileMapping(FILE_MAP_READ, FALSE, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap == NULL)
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return;
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m_lpControlMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) MapViewOfFile(m_hControlMemoryMap, FILE_MAP_READ, 0, 0, 0);
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if (m_lpControlMemoryMap == NULL)
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{
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CloseHandle(m_hControlMemoryMap);
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return;
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}
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// if only 1 left then unmap the view - release memory map
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if (m_lpControlMemoryMap->ControlCount == 0)
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{
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// get rid of view
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UnmapViewOfFile(m_lpControlMemoryMap);
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}
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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}
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// this member function adds a control name into the global list.
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// There is only 1 global list that is used for all application instances.
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// If a name is added into the list that is already there and the ProcessId is
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// different then a new member is added otherwise the old member is used.
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void CControlList::Add(LPCTSTR ImageControl, HWND hImageWnd, DWORD ProcessId)
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{
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LPIMAGECONTROL_MEMORY_MAP lpMemoryMap;
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LPIMAGECONTROLINFO lpControlList;
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int i;
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char TempControl[CONTROLSIZE],ExistingControl[CONTROLSIZE];
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// open the memory mapped file
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m_hControlMemoryMap = OpenFileMapping(FILE_MAP_WRITE, FALSE, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap == NULL)
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return;
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// get address space for memory mapped file
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m_lpControlMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) MapViewOfFile(m_hControlMemoryMap, FILE_MAP_WRITE, 0, 0, 0);
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if (m_lpControlMemoryMap == NULL)
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{
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CloseHandle(m_hControlMemoryMap);
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return;
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}
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_mbscpy((unsigned char *)TempControl, (const unsigned char *)ImageControl);
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_mbsupr((unsigned char *)TempControl);
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// set pointer to beginning of memory map
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lpMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) m_lpControlMemoryMap;
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if (lpMemoryMap->ControlCount < (m_CurrentControlSize - 1))
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{
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// point to first control in list
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lpControlList = &lpMemoryMap->ControlInfo;
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// get to next empty position and make sure its not a duplicate
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for (i = 0; i < lpMemoryMap->ControlCount; i++, lpControlList++)
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{
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_mbscpy((unsigned char *)ExistingControl, (const unsigned char *)lpControlList->ControlName);
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_mbsupr((unsigned char *)ExistingControl);
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// compare upper case values
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if ((_mbscmp((const unsigned char *)TempControl, (const unsigned char *)ExistingControl) == 0)
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&& lpControlList->ProcessId == ProcessId)
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{
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// found existing member, replace it with new stuff
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lpControlList->hImageControl = hImageWnd;
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lpControlList->ProcessId = ProcessId;
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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return;
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}
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} // end for
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// put in new member
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_mbscpy((unsigned char *)lpControlList->ControlName, (const unsigned char *)ImageControl);
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lpControlList->hImageControl = hImageWnd;
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lpControlList->ProcessId = ProcessId;
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lpMemoryMap->ControlCount++;
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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}
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}
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// this functions deleted a image control from the global list.
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BOOL CControlList::Delete(LPCTSTR ImageControl, DWORD ProcessId, HWND hImageWnd)
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{
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LPIMAGECONTROL_MEMORY_MAP lpMemoryMap;
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LPIMAGECONTROLINFO lpControlList;
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int i,j;
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char TempControl[CONTROLSIZE],ExistingControl[CONTROLSIZE];
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// open the memory mapped file
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m_hControlMemoryMap = OpenFileMapping(FILE_MAP_WRITE, FALSE, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap == NULL)
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return FALSE;
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// get address space for memory mapped file
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m_lpControlMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) MapViewOfFile(m_hControlMemoryMap, FILE_MAP_WRITE, 0, 0, 0);
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if (m_lpControlMemoryMap == NULL)
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{
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CloseHandle(m_hControlMemoryMap);
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return FALSE;
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}
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_mbscpy((unsigned char *)TempControl, (const unsigned char *)ImageControl);
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_mbsupr((unsigned char *)TempControl);
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// set pointer to beginning of memory map
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lpMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) m_lpControlMemoryMap;
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// point to first control in list
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lpControlList = &lpMemoryMap->ControlInfo;
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for (i = 0; i < lpMemoryMap->ControlCount; i++, lpControlList++)
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{
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if (lpControlList->ProcessId == ProcessId)
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{
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_mbscpy((unsigned char *)ExistingControl, (const unsigned char *)lpControlList->ControlName);
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_mbsupr((unsigned char *)ExistingControl);
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if ((_mbscmp((const unsigned char *)TempControl, (const unsigned char *)ExistingControl) == 0) &&
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(hImageWnd == lpControlList->hImageControl))
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{
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// update all other entries
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for (j = i; j < lpMemoryMap->ControlCount; j++, lpControlList++)
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{
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// set last entries to null
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if (j == (lpMemoryMap->ControlCount - 1))
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{
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_mbscpy((unsigned char *)lpControlList->ControlName, (const unsigned char *)"");
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lpControlList->hImageControl = (HWND)0;
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lpControlList->ProcessId = (DWORD)0;
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lpMemoryMap->ControlCount--;
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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return TRUE;
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}
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// update current index with next one in list
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_mbscpy((unsigned char *)lpControlList->ControlName, (const unsigned char *)(lpControlList + 1)->ControlName);
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lpControlList->hImageControl = (lpControlList + 1)->hImageControl;
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lpControlList->ProcessId = (lpControlList + 1)->ProcessId;
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}
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} // end for
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}
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} // end for
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// control not found
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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return FALSE;
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}
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// this function returns TRUE or FALSE whether a control name exists. It will
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// also return the current window handle.
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BOOL CControlList::Lookup(LPCTSTR ImageControl, LPHANDLE hImageWnd, DWORD ProcessId)
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{
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LPIMAGECONTROL_MEMORY_MAP lpMemoryMap;
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LPIMAGECONTROLINFO lpControlList;
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int i;
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char TempControl[CONTROLSIZE],ExistingControl[CONTROLSIZE];
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// open the memory mapped file
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m_hControlMemoryMap = OpenFileMapping(FILE_MAP_READ, FALSE, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap == NULL)
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return FALSE;
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// get address space for memory mapped file
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m_lpControlMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) MapViewOfFile(m_hControlMemoryMap, FILE_MAP_READ, 0, 0, 0);
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if (m_lpControlMemoryMap == NULL)
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{
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CloseHandle(m_hControlMemoryMap);
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return FALSE;
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}
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_mbscpy((unsigned char *)TempControl, (const unsigned char *)ImageControl);
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_mbsupr((unsigned char *)TempControl);
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// set pointer to beginning of memory map
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lpMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) m_lpControlMemoryMap;
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// point to first control in list
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lpControlList = &lpMemoryMap->ControlInfo;
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for (i = 0; i < lpMemoryMap->ControlCount; i++, lpControlList++)
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{
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if (lpControlList->ProcessId == ProcessId)
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{
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_mbscpy((unsigned char *)ExistingControl, (const unsigned char *)lpControlList->ControlName);
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_mbsupr((unsigned char *)ExistingControl);
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if (_mbscmp((const unsigned char *)TempControl, (const unsigned char *)ExistingControl) == 0)
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{
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// return info
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*hImageWnd = lpControlList->hImageControl;
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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return TRUE;
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}
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}
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} // end for
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// control not found
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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return FALSE;
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}
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// this function gets a count of the controls for the specified instance
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UINT CControlList::GetCount(DWORD ProcessId)
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{
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LPIMAGECONTROL_MEMORY_MAP lpMemoryMap;
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UINT Count;
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// open the memory mapped file
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m_hControlMemoryMap = OpenFileMapping(FILE_MAP_READ, FALSE, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap == NULL)
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return 0;
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// get address space for memory mapped file
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m_lpControlMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) MapViewOfFile(m_hControlMemoryMap, FILE_MAP_READ, 0, 0, 0);
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if (m_lpControlMemoryMap == NULL)
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{
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CloseHandle(m_hControlMemoryMap);
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return 0;
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}
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// set pointer to beginning of memory map
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lpMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) m_lpControlMemoryMap;
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Count = lpMemoryMap->ControlCount;
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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// return count
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return Count;
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}
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// this function returns a list of image controls for the specified instance. I am
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// assuming the pointer to the list is valid and large enough to hold all the members in the list.
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void CControlList::GetControlList(DWORD ProcessId, LPCONTROLLIST lpList)
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{
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LPIMAGECONTROL_MEMORY_MAP lpMemoryMap;
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LPIMAGECONTROLINFO lpControlList;
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int i;
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// open the memory mapped file
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m_hControlMemoryMap = OpenFileMapping(FILE_MAP_READ, FALSE, IMAGE_EDIT_OCX_MEMORY_MAP_STRING);
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if (m_hControlMemoryMap == NULL)
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return;
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// get address space for memory mapped file
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m_lpControlMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) MapViewOfFile(m_hControlMemoryMap, FILE_MAP_READ, 0, 0, 0);
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if (m_lpControlMemoryMap == NULL)
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{
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CloseHandle(m_hControlMemoryMap);
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return;
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}
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// set pointer to beginning of memory map
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lpMemoryMap = (LPIMAGECONTROL_MEMORY_MAP) m_lpControlMemoryMap;
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// point to first control in list
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lpControlList = &lpMemoryMap->ControlInfo;
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for (i = 0; i < lpMemoryMap->ControlCount; i++, lpControlList++)
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{
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if (lpControlList->ProcessId == ProcessId)
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{
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_mbscpy((unsigned char *)lpList->ControlName, (const unsigned char *)lpControlList->ControlName);
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lpList++;
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}
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} // end for
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// close memory map file
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CloseHandle(m_hControlMemoryMap);
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return;
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}
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