MFC弹出选择目录对话框-VC判断目录是否存在及遍历目...-bullet setp 流程

当前位置: 编程技术>其它

本页文章导读:

▪MFC弹出选择目录对话框代码如下：LPMALLOC lpMalloc;if(::SHGetMalloc(&lpMalloc)!=NOERROR){AfxMessageBox("选择下载目录操作出错");return;}char szDisplayName[_MAX_PATH];char szBuffer[_MAX_PATH];BROWSEINFO browseInfo;browseInfo.hwndOwner=thi.........

▪VC判断目录是否存在及遍历目录指定的文件. // MakePhotoLog.cpp : Defines the entry point for the console application.#include "stdafx.h"#pragma pack(1)typedef struct __tag_file_info{ DWORD &n.........

▪bullet setp 流程好的我要开始新篇了新篇是Bullet的刚开始看Bullet时代码不熟看后忘前不过怎么说呢那我就每天看草于是我就明白了先看看那个step函数： 1void btDiscreteDynamicsWorld::inte.........

[1]MFC弹出选择目录对话框

来源: 发布时间: 2013-11-15

代码如下：

LPMALLOC lpMalloc;
if(::SHGetMalloc(&lpMalloc)!=NOERROR)
{
AfxMessageBox("选择下载目录操作出错");
return;
}
char szDisplayName[_MAX_PATH];
char szBuffer[_MAX_PATH];
BROWSEINFO browseInfo;
browseInfo.hwndOwner=this->m_hWnd;
browseInfo.pidlRoot=NULL;
browseInfo.pszDisplayName=szDisplayName;
browseInfo.lpszTitle="请选择下载文件的存储路径";
browseInfo.ulFlags=BIF_RETURNFSANCESTORS|BIF_RETURNONLYFSDIRS;
browseInfo.lpfn=NULL;
browseInfo.lParam=0;
LPITEMIDLIST lpItemIDList;
if((lpItemIDList=::SHBrowseForFolder(&browseInfo))!=NULL)
{
if(::SHGetPathFromIDList(lpItemIDList,szBuffer))
{
if(szBuffer[0]=='\0')
{
AfxMessageBox("Fail to get directory",MB_ICONSTOP|MB_OK);
return;
}
DownFileDirectory=szBuffer;
}
else
{
AfxMessageBox("Fail to get directory!",MB_ICONSTOP|MB_OK);
return;
}
lpMalloc->Free(lpItemIDList);
lpMalloc->Release();
}
CString strMsg;
strMsg.Format("选择目录为:%s",DownFileDirectory);
AfxMessageBox(strMsg);

王海光 2013-01-10 16:25 发表评论

[2]VC判断目录是否存在及遍历目录指定的文件.

来源: 发布时间: 2013-11-15

// MakePhotoLog.cpp : Defines the entry point for the console application.

#include "stdafx.h"

#pragma pack(1)
typedef struct __tag_file_info
{
    DWORD    length;    //文件长度
    DWORD    crc32;    //暂未使用
    char    name[38];//文件名
    char    res[4];
} file_info;            //Total = 50
#pragma pack()

long GetLocalFileSize(const char* szFileName)
{
    struct stat f_stat;
    if (stat(szFileName, &f_stat) == -1) {
        return -1;
    }
    return (long)f_stat.st_size;
}

BOOL IsDirectory(CString strPath)
{
    WIN32_FIND_DATA wfd;
    HANDLE hFind = FindFirstFile(strPath, &wfd);
    BOOL bRet = ((hFind!=INVALID_HANDLE_VALUE) &&  (wfd.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY));
    FindClose(hFind);
    return bRet;
}

int main(int argc, char *argv[])
{
    WIN32_FIND_DATA wfd;
    HANDLE hFind;
    CString strPath;
    CString strFileName;
    CString strFind;
    CString strJpgFile;

    if (argc<2)
    {
        printf("Usage:%s <photo-log path>\r\n",argv[0]);
        return -1;
    }

    strPath = argv[1];
    if (!IsDirectory(strPath))
    {
        printf("\"%s\" not found\r\n",argv[1]);
        return -1;
    }

    PathAddBackslash(strPath.GetBuffer(strPath.GetLength()+2));
    strPath.ReleaseBuffer();

    strFileName     = strPath;
    strFileName += "photo_log.dat";

    FILE* fp = fopen("photo_log.dat","w+b");
    if (fp==NULL)
    {
        printf("open \"%s\" error \r\n",(LPCTSTR)strFileName);
        return -1;

[3]bullet setp 流程

来源: 发布时间: 2013-11-15

好的
我要开始新篇了
新篇是Bullet的
刚开始看Bullet时代码不熟看后忘前不过怎么说呢那我就每天看草
于是我就明白了
先看看那个step函数：

1void    btDiscreteDynamicsWorld::internalSingleStepSimulation(btScalar timeStep)
2{
3
4    BT_PROFILE("internalSingleStepSimulation");
5
6    if(0 != m_internalPreTickCallback) {
7        (*m_internalPreTickCallback)(this, timeStep);
8    }
9
10    /**////apply gravity, predict motion
11    predictUnconstraintMotion(timeStep);
12
13    btDispatcherInfo& dispatchInfo = getDispatchInfo();
14
15    dispatchInfo.m_timeStep = timeStep;
16    dispatchInfo.m_stepCount = 0;
17    dispatchInfo.m_debugDraw = getDebugDrawer();
18
19
20    createPredictiveContacts(timeStep);
21
22