forget that lets just talk about objects

[kyle11778]

ok so in my last post i wanted to get a program to run. thanks to all who tried to help but i think i am going to move on.

so i have a new question... do i need to make an "active object" to get events that happens outside the program, such as changing the folder/file names. if so is there specific variables required to make it?

[kyle11778]

Is Vexer out there?lol

'Vexer' gave me a link but i didn't look at it very close but i just took a second look and it is something i would like to use.
http://msdn.microsoft.com/en-us/library/aa365465%28VS.85%29.aspx

BOOL WINAPI ReadDirectoryChangesW(
  __in         HANDLE hDirectory,
  __out        LPVOID lpBuffer,
  __in         DWORD nBufferLength,
  __in         BOOL bWatchSubtree,
  __in         DWORD dwNotifyFilter,
  __out_opt    LPDWORD lpBytesReturned,
  __inout_opt  LPOVERLAPPED lpOverlapped,
  __in_opt     LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine
);

this how do i get it to a point so i can use it.(remember i am a noob at windows programming)

[minime]

Hi,

Have your tried googling readdirectorychangesw examples?

[kyle11778]

ofcourse, but most of what i found was other peoples broken code. still searching though...

[kyle11778]

so all i did was made a widows API app and put the function in and it gives me a bunch of errors

9 C:\Users\Kyle\Desktop\folderlockprog\main.cpp [Warning] `__stdcall__' attribute only applies to function types

9 C:\Users\Kyle\Desktop\folderlockprog\main.cpp `BOOL ReadDirectoryChangesW' redeclared as different kind of symbol

18 C:\Users\Kyle\Desktop\folderlockprog\main.cpp initializer expression list treated as compound expression

so i have no idea what these errors mean. anyone explain them to me please, thanks

[Incubbus]

you code?:..

[kyle11778]

yeah, whats your point?

[kyle11778]

10 C:\Users\Kyle\Desktop\folderlockprog\main.cpp expected `,' or `...' before string constant

this error shows up for this line:
LPCSTR "C:Users/Kyle/Desktop/watcher",

what do i need to change?

[Vexer]

You need a name of the variable...

remember i am a noob at windows programming

I'd have to agree. (Just Kidding)

Also, I think Incubbus meant to ask you for your code.

[kyle11778]

Oh, i certainly hope so,lol? how rude would that have been!lol
"you code",... yes i code ya crazy.lol-- sorry if i miss understood...

anyway this is what i have:

#include <windows.h>

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/*  Make the class name into a global variable  */
char szClassName[ ] = "WindowsApp";

HANDLE WINAPI CreateFile(
  LPCSTR "C:Users/Kyle/Desktop/watcher", // !!!- this is where the error occurred-!!!
  DWORD 0,
  DWORD 0,
  LPSECURITY_ATTRIBUTES NULL,
  DWORD OPEN_EXISTING,
  DWORD FILE_ATTRIBUTE_NORMAL,
  HANDLE NULL
);


//BOOL WINAPI ReadDirectoryChangesW(
//  __in         HANDLE FILE_LIST_DIRECTORY,
//  __out        PVOID lpBuffer,
//  __in         DWORD nBufferLength,
//  __in         BOOL bWatchSubtree,
//  __in         DWORD dwNotifyFilter,
//  __out_opt    PDWORD lpBytesReturned,
//  __inout_opt  LPOVERLAPPED lpOverlapped,
//  __in_opt     LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine
//);



int WINAPI WinMain (HINSTANCE hThisInstance,
                    HINSTANCE hPrevInstance,
                    LPSTR lpszArgument,
                    int nFunsterStil)

{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, "rs.ico");
    wincl.hIconSm = LoadIcon (NULL, "rs.ico");
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default color as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;

    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           "Windows App",       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           544,                 /* The programs width */
           375,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );

    /* Make the window visible on the screen */
    ShowWindow (hwnd, nFunsterStil);

    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}


/*  This function is called by the Windows function DispatchMessage()  */

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)                  /* handle the messages */
    {
        case WM_DESTROY:
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;
        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }

    return 0;
}

thats all of it::edit- do i have to make a variable containing the address i want to use and substitute it in where the error is?

[Vexer]

No, you can actually omit the LPCSTR all together. There are a few other problems in your code I'd like to address.

1. This is an invalid directory:
"C:Users/Kyle/Desktop/watcher"
It should be:
"C:\\Users\\Kyle\\Desktop\\watcher"
Note the double \.

2. You cannot call a function outside of a function. Consider moving your Call to CreateFile to after your call to ShowWindow.

[Incubbus]

On windows it is an valid path string while respecting the naming convetions... (the api´s will convert it to the right version)... http://msdn.microsoft.com/en-us/library/aa365247%28v=VS.85%29.aspx

[kyle11778]

alright well i changed the file path anyway( just to be correct),

No, you can actually omit the LPCSTR all together.

do i need any of the data types when putting the information into the call?

EDIT:: I put null for the last value needed in the call(template) and msdn says that it can be null but it comes up with an error saying cant convert int to *void. so now what should i use?

[Vexer]

I think your are misinterpreting the MSDN documentation.

Say you have a function on MSDN like this:

HWND GetDlgItem(
  __in  HWND hDlg,
  __in  int nIDDlgItem
);

This is the declaration of the function, which means that you must specify the types of the arguments(the _in or _out is just added by MSDN to help you, that must be omitted from your function call as well).

When you call the function it should look like this:

GetDlgItem(hWnd, 1);

Note that no variable types are included there.

So, to answer your question, no, unless you are explicitly type casting(you are not).

[kyle11778]

thanks but i got it. i was feeling so stupid once i got it,lol. errrrrrr