Deleting folders and sub folders

This is a discussion on Deleting folders and sub folders within the C++ Programming forums, part of the General Programming Boards category; I am writing a win32app in C++ and I want to be able to delete a folder which will have ...

  1. #1
    Registered User Boomba's Avatar
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    Question Deleting folders and sub folders

    I am writing a win32app in C++ and I want to be able to delete a folder which will have many sub folders (with one txt file in each folder) at the clcik of a button. How would I go about doing so? I know how to delete a folder with nothing in it...but I do not know how to delete a folder with subfolders and files in it.

    any suggestions?

    thanx in advance,
    Boomba

  2. #2
    C++ Developer XSquared's Avatar
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    Code:
    system( "delete /y C:\\AFolder" );
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

    You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie

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    Registered User Boomba's Avatar
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    thanx for your suggestion XSquared but I forgot to mention that the folder names are user entered and I as a programmer cannot state the path because that is also user defined.

    So is it still posible to use somthing similair to the code above? and if so how would i use it?

    any suggestions?

    thanx in advance,
    boomba

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    Another solution is to traverse the folder and remove all files and sbufolders. Here are some key win32 API.

    FindFirstFile()
    FindNextFile()
    DeleteFile()

    Kuphryn

  5. #5
    carry on JaWiB's Avatar
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    use something like system(str) with str being "deltree /y c:\\" plus the user entered folder...
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
    -John Milton, Paradise Regained (1671)

    "Work hard and it might happen."
    -XSquared

  6. #6
    Registered User Boomba's Avatar
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    well my "user entered folder" is just where ever the program is
    e.g... if my exe for my program is in C:\\program.....then my "user enterd folder" is in C:\\program\\folder (whatever the user wants to call it)

    so if the name of the "folder" is stored in a variable called course how would I implement that into the System() command? I also have the path that leads to "folder" in a variable called "rootdirectory" if that helps at all.

    or am I thinking the wrong way?

    thanx in advance,
    boomba

  7. #7
    C++ Developer XSquared's Avatar
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    Code:
    char sysCmd[ MAX_PATH ];
    
    strcpy( sysCmd, "deltree /y " );
    strcat( sysCmd, pathToProgram );
    strcat( sysCmd, userPath );
    
    system( sysCmd );
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

    You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie

  8. #8
    Epo
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    Alrighty, well, that code works perfectly, but is there a way to call it without having the Dos-Prompt window come up? Or is that built in to the System call?

  9. #9
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    File Handling routines

    If you are building a win32 app you should be using the windows.h file and its file handling routines....

    Code:
    HANDLE FindFirstFile(
      LPCTSTR lpFileName,  // pointer to name of file to search for
      LPWIN32_FIND_DATA lpFindFileData 
                           // pointer to returned information
    );
    
    BOOL FindNextFile(
      HANDLE hFindFile,  // handle to search
      LPWIN32_FIND_DATA lpFindFileData 
                         // pointer to structure for data on found file
    );
     
    BOOL RemoveDirectory(
      LPCTSTR lpPathName   // pointer to directory to remove
    );
    
    BOOL DeleteFile(
      LPCTSTR lpFileName   // pointer to name of file to delete
    );
    you can build some recursive function that deletes every file and then destroys the directory...
    zMan

  10. #10
    It's full of stars adrianxw's Avatar
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    I have a tutorial on the use of FindFirstFile()/FindNextFile() on my site here.
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

  11. #11
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    deleting a folder

    try the following code....

    Code:
    #include<iostream>
    #include<string>
    #include <windows.h>
    
    using namespace std;
    
    
    
    void DeleteFolder( const char *szFolderPath)
    {
    	string strFileFilter;
    
    	strFileFilter = szFolderPath;
    	strFileFilter += "\\*.*";
    
    	WIN32_FIND_DATA win32FindData; //struct to hold file information
    
    	HANDLE hFile = FindFirstFile(strFileFilter.c_str(), &win32FindData);
    
    	while( FindNextFile(hFile, &win32FindData) )
    	{
    		string strFilePath; // full file path
    		string strFileName; // file name with extension only
    
    		strFilePath = szFolderPath;
    		strFilePath += "\\";
    		strFilePath += win32FindData.cFileName;
    		strFileName = win32FindData.cFileName;
    
    		//If is dots
    		if( strFileName == "." ||
    			strFileName == "..")
    		{
    			continue;
    		}
    
    		int iFindDot = strFileName.find(".");
    
    		//Assume it is a directory because no '.' was found
    		if( iFindDot < 0 ) //not extension
    		{
    			//Recursive call
    			DeleteFolder( strFilePath.c_str() );
    		}
    
    		DeleteFile(strFilePath.c_str());
    	}
    
    	FindClose( hFile ); //release handle otherwise dir cannot be removed
    
    	RemoveDirectory( szFolderPath );
    }
    
    int main(void)
    {
    	string strDir;
    
    	while(1)
    	{
    		cout << "\nEnter dir path or \"quit\" to exit: " << endl;
    		cin >> strDir;
    
    		if( strDir == "quit" )
    			break;
    	
    		DeleteFolder( strDir.c_str() );
    	}
    
    	return 0;
    }
    zMan

  12. #12
    Registered User Boomba's Avatar
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    the system() method worked great for me too but is it supposed to work in windows xp ?...because I tried it on a computer with XP and it does nothing....the black consol windows quickly shows tho

    thanx in advance,
    Boomba,

  13. #13
    It's full of stars adrianxw's Avatar
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    system() is always a bad idea, there are reasons in the FAQ.
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

  14. #14
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    Gues what else is a bad idea?

    Running, zMan's code up there, I have just had my WHOLE C:\ deleted

    I just compiled and run it, nothing happens, now I notice I have 68GB free out of 75GB :MAD: f**k There goes all my work, including my f**king English essay

    Ah. Time to reformat and restart all over again.

  15. #15
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    omg... roflmao

    Its your fault for typing in "C:\" !!
    C Code. C Code Run. Run Code Run... Please!

    "Love is like a blackhole, you fall into it... then you get ripped apart"

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