我想開發(fā)一個(gè)執(zhí)行分頁(yè)功能的模塊，以便可以像電子書一樣查看任意文件夾中的圖片。我正在嘗試使用C #and實(shí)現(xiàn)接口和功能C++ MFC。界面：文件總數(shù)不固定。示例：+Folder : images|_ image_01.jpg |_ image_02.jpg |_ image_03.jpg Total page : 3 (If an image is created in the folder:"images", Total page will be 4.) Current page : 2 (image_02.jpg) 如果我按<<PREV( NEXT>>)，應(yīng)用程序?qū)@示image_01.jpg( image_03.jpg)。不幸的是我不知道。我該如何實(shí)施？我無(wú)法描述代碼，因?yàn)槲以诨ヂ?lián)網(wǎng)上找不到解決方案。請(qǐng)不要投票反對(duì)并教我如何做。提前謝謝你。如果你解決了任何一個(gè)C # Windows Form Application和C ++ MFC Application solutions，我肯定會(huì)投票。如果您能同時(shí)發(fā)布兩個(gè)解決方案，我將不勝感激。
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C++ MFC Windows 應(yīng)用程序?qū)崿F(xiàn)：
項(xiàng)目名稱： CImagePreview
DWORD ev_page_current, ev_page_total;
WCHAR ev_current_file[MAX_PATH];
void CImagePreview::OnPressPrevButton()
{
// TODO: Add your control notification handler code here
ev_page_total = GetTotalPages(IMAGE_PATH);
WCHAR wszPath[MAX_PATH] = {0};
GetPrevImagePathW(IMAGE_PATH, ev_current_file, wszPath);
DisplayImages(wszPath);
ev_page_current > 1 ? ev_page_current-- : ev_page_current = 1;
SetPageNumber();
}
void CImagePreview::OnPressNextButton()
{
// TODO: Add your control notification handler code here
ev_page_total = GetTotalPages(IMAGE_PATH);
WCHAR wszPath[MAX_PATH] = {0};
GetNextImagePathW(IMAGE_PATH, ev_current_file, wszPath);
DisplayImages(wszPath);
ev_page_current < ev_page_total ? ev_page_current++ : ev_page_current = ev_page_total;
SetPageNumber();
}
DWORD CImagePreview::DisplayImage(_In_ WCHAR* wszFilepath)
{
// You can display image with path.
return 0;
}
DWORD CImagePreview::GetNextImagePathW(_In_ WCHAR* wszFolderpath, _In_ WCHAR* wszFilename, _Out_ WCHAR* wszFilepath)
{return GetImagePathW(wszFolderpath, wszFilename, wszFilepath, NEXT);}
DWORD CImagePreview::GetPrevImagePathW(_In_ WCHAR* wszFolderpath, _In_ WCHAR* wszFilename, _Out_ WCHAR* wszFilepath)
{return GetImagePathW(wszFolderpath, wszFilename, wszFilepath, PREV);}
DWORD CImagePreview::GetImagePathW(_In_ WCHAR* wszFolderpath, _In_ WCHAR* wszInputFilename, _Out_ WCHAR* wszOutputFilepath, _In_ DWORD dwFlag)
{
WIN32_FIND_DATA t = {0};
HANDLE hFindFile = NULL;
BOOL blBreak = FALSE;
WCHAR wszFilename[MAX_PATH] = {0};
WCHAR wszFindpath[MAX_PATH] = {0};
WCHAR* wszFindname = NULL;
if (wszInputFilename)
{
if (NULL != wcsstr(wszInputFilename, L"\\"))
{
wszFindname = wcsrchr(wszInputFilename, L'\\');
wszFindname++;
}
}
// First set folder path.
wcscpy_s(wszOutputFilepath, MAX_PATH, wszFolderpath);
wcscpy_s(wszFindpath, MAX_PATH, wszFolderpath);
wcscat_s(wszFindpath, MAX_PATH, L"*.jpg");
hFindFile = FindFirstFileW(wszFindpath, &t); if (hFindFile == INVALID_HANDLE_VALUE){return GetLastError();}
wcscpy_s(wszFilename, MAX_PATH, t.cFileName);
if( hFindFile != INVALID_HANDLE_VALUE )
{
do
{
if (t.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY){}
else
{
if (NULL != wszFindname && !wcsicmp(wszFindname, t.cFileName))
{
if (PREV == dwFlag) break;
if (NEXT == dwFlag) {blBreak = TRUE; continue;}
if (0 == dwFlag){wcscpy_s(wszFilename, MAX_PATH, t.cFileName); break;}
}
if (blBreak) break;
if(0 == wcslen(wszInputFilename)) {wcscpy_s(wszFilename, MAX_PATH, t.cFileName); break;}
wcscpy_s(wszFilename, MAX_PATH, t.cFileName);
}
} while (FindNextFileW(hFindFile, &t));
}
if (blBreak && NEXT == dwFlag) wcscpy_s(wszFilename, MAX_PATH, t.cFileName);
FindClose(hFindFile);
wcscat_s(wszOutputFilepath, MAX_PATH, wszFilename);
return GetLastError();
}
INT CImagePreview::GetTotalPages(_In_ WCHAR* wszFolderpath)
{
INT nTotalPage = 0;
WIN32_FIND_DATA t = {0};
HANDLE hFindFile = NULL;
WCHAR wszFindpath[MAX_PATH] = {0};
wcscpy_s(wszFindpath, MAX_PATH, wszFolderpath);
wcscat_s(wszFindpath, MAX_PATH, L"*.jpg");
hFindFile = FindFirstFileW(wszFindpath, &t); if (hFindFile == INVALID_HANDLE_VALUE){return GetLastError();}
if( hFindFile != INVALID_HANDLE_VALUE )
{
do {
if (t.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY){}
else{nTotalPage++;}
} while (FindNextFileW(hFindFile, &t));
}
FindClose(hFindFile);
return nTotalPage;
}
VOID CImagePreview::SetPageNumber(void)
{
CString cstrPage;
cstrPage.Format(_T("%d/%d"), ev_page_total, ev_page_current);
m_edit_page.SetWindowTextW((LPTSTR)(LPCTSTR)cstrPage);
return VOID();
}
文件的順序DIR_PATH可以幫助您。我也測(cè)試了我的答案，它運(yùn)行良好。因?yàn)槟?，我剛剛制作了一個(gè)電子圖片預(yù)覽器。
我認(rèn)為您不需要更多C #相關(guān)的解決方案。我認(rèn)為它與MFC解決方案相同......怎么樣？
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