得到一个目录下所有指定扩展名的文件

使用wxWidgets版本

#include <wx/wx.h>
#include "wx/dir.h"

typedef struct TargetFile TargetFile;
struct TargetFile

{
	char *path;
	TargetFile *next;
};

TargetFile* GetTargetFilePath(wxString target_path, wxString filespec)
{
	wxDir dir(target_path);

	if (!dir.IsOpened())
	{
		return NULL;
	}

	TargetFile *head, *temp, *p;
	head = (TargetFile*) malloc(sizeof(TargetFile));
	head->next = NULL;
	temp = head;

	wxString filename;
	bool cont = dir.GetFirst(&filename, filespec, wxDIR_FILES);
	while (cont)
	{
		p = (TargetFile*) malloc(sizeof(TargetFile));
		memset(p, 0, sizeof(TargetFile));
		wxString filepath = target_path + wxFILE_SEP_PATH + filename;
		p->path = strdup(filepath.c_str());
		temp->next = p;
		temp = p;

		cont = dir.GetNext(&filename);
	}
	p->next = NULL;
	return head;
}

int main()

{
	TargetFile *head = GetTargetFilePath(wxT("E:\\software\\TestData\\pdf"),
			wxT("*.pdf"));
	TargetFile *print = head->next;

	while (print)
	{
		std::cout << print->path << std::endl;
		print = print->next;
	}
	free(head);
free(print);
	return 0;
}

 VC版本

#include "stdafx.h"
#include <windows.h>
#include <stdio.h>
#include <string.h>
#define Length 1024

TargetFile * DirectoryList(char *path, char *extension)
{
	WIN32_FIND_DATA FindData;
	char targetpath[Length];
	char file_path[Length];
	strcpy(targetpath, path);
	strcat(targetpath, "\\*.pdf");
	HANDLE hFind = FindFirstFile(targetpath, &FindData);
	if (hFind == INVALID_HANDLE_VALUE)
	{
		return NULL;
	}

	TargetFile  *head = NULL;
	TargetFile  *p, *temp;
	head = (TargetFile *) malloc(sizeof(TargetFile ));
	head->next = NULL;
	temp = head;

	while (true)
	{
		wsprintf(file_path, "%s\\%s", path, FindData.cFileName);	
		p = (TargetFile  *) malloc(sizeof(TargetFile ));
		p->name = strdup(file_path);
		temp->next = p;
		temp = p;	
		if (!FindNextFile(hFind, &FindData))
		{
			break;
		}
	}
	p->next = NULL;
	return head;
}