WinINeT进度条 [英] WinINeT Progress Bar
本文介绍了WinINeT进度条的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
当程序从ftp源下载时，如何让开始时的进度条开始并缓慢增加.. ??????它变得疯狂就像填充了100万次......但是当它完成下载时就会停止.....
这里是我的代码
void CSimpleftpclientDlg :: OnButton4（）
{
int index;
CString strText;
index = m_dir.GetCurSel（）;
m_dir.GetText（index，strText）;
HINTERNET handle1 = FtpOpenFile（hIConnect，strText，GENERIC_READ，FTP_TRANSFER_TYPE_BINARY， 0 ）;
DWORD filesized = FtpGetFileSize（handle1，NULL）;
CString csNumber;
csNumber.Format（ ％lu，文件化）;
MessageBox（csNumber，csNumber，MB_OK）;
HANDLE hFile = CreateFile（strText，GENERIC_WRITE，NULL，NULL，CREATE_ALWAYS，FILE_ATTRIBUTE_NORMAL，NULL）;
char 缓冲区[ 4024 ];
DWORD dwRead = 0 ;
while （InternetReadFile（handle1，Buffer， sizeof （缓冲区），& dwRead）== TRUE）
{
如果（dwRead = = 0 ）
break ;
DWORD dwWrite = 0 ;
progress2 + = dwRead;
m_yay.StepIt（）;
WriteFile（hFile，Buffer，dwRead，& dwWrite，NULL）;
}
}
请帮助
添加代码块，删除SHOUTING - OriginalGriff [/ edit]
解决方案
使用PostMessage API。将用户定义的消息发布到窗口/对话框。在那里你处理它并设置值。
也许你应该以某种方式使用PostThreadMessage：
PostThreadMessage揭秘 [ ^ ]
bool m_signed = false; // peoplewant25jan@yahoo.com如果您需要帮助，欢迎
静态DWORD WINAPI DownThread（LPVOID pParameter）// CHTTPDownlogTestDlg
{
CDownloadZipDlg * pThis =（CDownloadZipDlg *）pParameter;
HINTERNET session = NULL;
HINTERNET connect = NULL;
HINTERNET http = NULL;
TCHAR url [MAX_PATH] = {0};
TCHAR服务器[MAX_PATH] = {0};
TCHAR文件[MAX_PATH] = {0 };
TCHAR名称[MAX_PATH] = _T（C：\\MyDownLog \\）;
BYTE lpReadeBuffer [1024 * 8] = { 0};
TCHAR标题[8] = {0};
TCHAR lpLength [20] = _T（Îļþ'óС：）;
DWORD dwTimeout = 15000;
DWORD dwReq = 0;
DWORD dwBufferLength = 500;
DWORD dwIndex = 0;
CString str;
TCHAR * p;
pThis-> GetDlgItemText（IDC_EDIT1，url，MAX_PATH）;
if（_t cslen（url）< 7）
goto theEnd;
_tcsncpy（header，url，7）;
if（_tcsicmp（header， _T（http：//））！= 0）
转到结尾;
_tcscpy（服务器，网址+7）;
p = _tcschr（服务器，'/'）;
if（NULL！= p）
{
* p ='\'0' ;
_tcscat（name，_tcsrchr（url，'/'）+ 1）;
}
_tcscpy（file，url + _tcslen（服务器）+ 8）;
session = InternetOpen（_T（Mozilla / 4.0（兼容）），INTERNET_OPEN_TYPE_DIRECT，NULL，NULL，0）;
if（NULL == session）
{
AfxMessageBox（_T（''½»á»°Ê§°Ü））;
转到结尾;
}
connect = InternetConnect（会话，服务器，80，NULL，NULL，INTERNET_SERVICE_HTTP，0,0）;
if（NULL == connect）
{
AfxMessageBox（_T（½¨Á¢¬¬½Óʧ°Ü））;
转到theSession;
}
// CHAR * pAcceptTypes =* / * ;
http = HttpOpenRequest（连接，GET，文件，_T（HTTP / 1.1），NULL，/ *（LPCSTR *）&pAcceptTypes * / NULL，INTERNET_FLAG_RELOAD，0）;
if（NULL == http）
{
AfxMessageBox（_T（ÇëÇó»á»°Ê§°Ü））;
转到theConnect;
}
if（HttpSendRequest（http，NULL，0，NULL，0））
{
// dwBufferLength = 4; //// InternetGetLastResponseInfo
http://www.dreamincode.net/forums/topic/101532-download-file-from- url /
if（！HttpQueryInfo（http，HTTP_QUERY_CONTENT_LENGTH，// | HTTP_QUERY_FLAG_NUMBER，
&lpReadeBuffer，&dwBufferLength，NULL））//dwBufferLengthÒ»¶¨ÒªÓгõʼ'óС
{
AfxMessageBox（_T（» ñÈ¡Îļþ'óСʧ°Ü））;
转到theHttp;
}
pThis-> m_progress.SetRange（ 0,100）;
DWORD allLength = atol（（char *）lpReadeBuffer）;
memset（header，0，sizeof（TCHAR）* 8）;
_itot（allLength，header，10）;
_tcscat（lpLength，header）;
_tcscat（lpLength，Bit）;
pThis-> SetDlgItemText（IDC_STATIC_L，lpLength）;
FILE * ffile = fopen（name，wb +）;
if（NULL == ffile）
{
AfxMessageBox（_T（''½'μʧ°Ü））;
转到Http;
}
做{
InternetReadFile（http，lpReadeBuffer，1024 * 8，&dwBufferLength）;
dwReq + = dwBufferLength;
if（dwBufferLength> 0）
fwrite（lpReadeBuffer，1，dwBufferLength，ffile）;
int i =（int）（（float）dwReq /（float）allLength *（float）100）;
pThis-> m_progress.SetPos（i）;
//睡眠（100）;
} while（dwBufferLength> 0）;
fclose（ffile）;
}
str .Format（_T（ÏÂÔØÍê³É：％s），姓名）;
AfxMessageBox（str）;
theHttp：
InternetCloseHandle（http）;
theConnect：
InternetCloseHandle（connect）;
theSession ：
InternetCloseHandle（会话）;
theEnd：
pThis-> m_signed = false;
返回0 ;
}
无效CSimpleftpclientDlg :: OnButton1（）
{
if（false == m_signed）
{
m_signed = true;
HANDLE handle = CreateThread（NULL，0，DownThread，（LPVOID）这，0，NULL）;
CloseHandle（句柄）;
}
其他
{
AfxMessageBox（_T（ÏÂÔؽø³ÌÕýÔÚÔËÐÐ））;
}
}
< blockquote>我在谷歌搜索发现了这个问题
然后
它会如果有人以同样的方式来到这里帮助其他
无论如何谢谢你
im新代码项目
how can I get the progress bar to start at the beginning and slowy increment as the program downloads from the ftp source..?????? its going crazy like filling 1 million times..but it does stop when its done downloading.....
here is my code
void CSimpleftpclientDlg::OnButton4()
{
int index;
CString strText;
index = m_dir.GetCurSel();
m_dir.GetText(index,strText);
HINTERNET handle1 = FtpOpenFile(hIConnect,strText,GENERIC_READ,FTP_TRANSFER_TYPE_BINARY,0);
DWORD filesized = FtpGetFileSize(handle1,NULL);
CString csNumber;
csNumber.Format("%lu", filesized);
MessageBox(csNumber,csNumber,MB_OK);
HANDLE hFile = CreateFile(strText, GENERIC_WRITE, NULL, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
char Buffer[4024];
DWORD dwRead =0;
while(InternetReadFile(handle1, Buffer, sizeof(Buffer), &dwRead) == TRUE)
{
if ( dwRead == 0)
break;
DWORD dwWrite = 0;
progress2 += dwRead;
m_yay.StepIt();
WriteFile(hFile, Buffer, dwRead, &dwWrite, NULL);
}
}
please help
[edit]Code block added, SHOUTING removed - OriginalGriff[/edit]
解决方案
use the PostMessage API. Post a user defined message to your window/dialog. There you handle it and set the value.
Maybe you should use PostThreadMessage somehow like that:
PostThreadMessage Demystified[^]
bool m_signed =false; // peoplewant25jan@yahoo.com if you need help , welcome
static DWORD WINAPI DownThread(LPVOID pParameter)//CHTTPDownlogTestDlg
{
CDownloadZipDlg* pThis = (CDownloadZipDlg *)pParameter;
HINTERNET session = NULL;
HINTERNET connect = NULL;
HINTERNET http = NULL;
TCHAR url[MAX_PATH] = {0};
TCHAR server[MAX_PATH] = {0};
TCHAR file[MAX_PATH] = {0};
TCHAR name[MAX_PATH] = _T("C:\\MyDownLog\\");
BYTE lpReadeBuffer[1024 * 8] = {0};
TCHAR header[8] = {0};
TCHAR lpLength[20] = _T("Îļþ´óС:");
DWORD dwTimeout = 15000;
DWORD dwReq = 0;
DWORD dwBufferLength = 500;
DWORD dwIndex = 0;
CString str;
TCHAR *p;
pThis->GetDlgItemText(IDC_EDIT1, url, MAX_PATH);
if(_tcslen(url) < 7)
goto theEnd;
_tcsncpy(header, url, 7);
if(_tcsicmp(header, _T("http://")) != 0)
goto theEnd;
_tcscpy(server, url + 7);
p = _tcschr(server, '/');
if(NULL != p)
{
*p = '\0';
_tcscat(name, _tcsrchr(url, '/') + 1);
}
_tcscpy(file, url + _tcslen(server) + 8);
session = InternetOpen(_T("Mozilla/4.0 (compatible)"), INTERNET_OPEN_TYPE_DIRECT , NULL, NULL, 0);
if(NULL == session)
{
AfxMessageBox(_T("´´½¨»á»°Ê§°Ü"));
goto theEnd;
}
connect = InternetConnect(session, server, 80, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 0);
if(NULL == connect)
{
AfxMessageBox(_T("½¨Á¢Á¬½Óʧ°Ü"));
goto theSession;
}
// CHAR* pAcceptTypes = "*/*";
http = HttpOpenRequest(connect, "GET", file, _T("HTTP/1.1"), NULL,/* (LPCSTR *)&pAcceptTypes*/NULL, INTERNET_FLAG_RELOAD, 0);
if(NULL == http)
{
AfxMessageBox(_T("ÇëÇó»á»°Ê§°Ü"));
goto theConnect;
}
if( HttpSendRequest(http, NULL, 0, NULL, 0) )
{
//dwBufferLength = 4;//// InternetGetLastResponseInfo
http://www.dreamincode.net/forums/topic/101532-download-file-from-url/
if( !HttpQueryInfo(http, HTTP_QUERY_CONTENT_LENGTH,// | HTTP_QUERY_FLAG_NUMBER,
&lpReadeBuffer, &dwBufferLength, NULL)) //dwBufferLengthÒ»¶¨ÒªÓгõʼ´óС
{
AfxMessageBox(_T("»ñÈ¡Îļþ´óСʧ°Ü"));
goto theHttp;
}
pThis->m_progress.SetRange(0, 100);
DWORD allLength = atol((char*)lpReadeBuffer);
memset(header, 0, sizeof(TCHAR) * 8);
_itot(allLength, header, 10);
_tcscat(lpLength, header);
_tcscat(lpLength, "Bit");
pThis->SetDlgItemText(IDC_STATIC_L, lpLength);
FILE *ffile = fopen(name, "wb+");
if(NULL == ffile)
{
AfxMessageBox(_T("´´½¨Îļþʧ°Ü"));
goto theHttp;
}
do{
InternetReadFile(http, lpReadeBuffer, 1024 * 8, &dwBufferLength);
dwReq += dwBufferLength;
if(dwBufferLength > 0)
fwrite(lpReadeBuffer, 1, dwBufferLength, ffile);
int i = (int)((float)dwReq / (float)allLength * (float)100);
pThis->m_progress.SetPos(i);
//Sleep(100);
}while(dwBufferLength > 0);
fclose(ffile);
}
str.Format(_T("ÏÂÔØÍê³É:%s"), name);
AfxMessageBox(str);
theHttp:
InternetCloseHandle(http);
theConnect:
InternetCloseHandle(connect);
theSession:
InternetCloseHandle(session);
theEnd:
pThis->m_signed = false;
return 0;
}
void CSimpleftpclientDlg::OnButton1()
{
if(false == m_signed)
{
m_signed = true;
HANDLE handle = CreateThread(NULL, 0, DownThread, (LPVOID)this, 0, NULL);
CloseHandle(handle);
}
else
{
AfxMessageBox(_T("ÏÂÔؽø³ÌÕýÔÚÔËÐÐ"));
}
}
i found this question by search in Google
then
it will help other if anybody came here by same way
anyway thank u
i m new to code project
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