Has anyone worked with...

Has anyone ever worked with progress bars? I am wanting to use them, but I am practicing progressing the bar while reading a file. I use CreateFile then read it. Here's some code:


InitCommonControls();

HWND hwndPB;

HANDLE hFile; // handle of file
DWORD cb; // size of file and count of bytes read
LPCH pch; // address of data read from file
LPCH pchTmp; // temporary pointer

SendMessage(hwndPB, PBM_SETBARCOLOR, 0, RGB(16,26,150));

// Ensure that the common control DLL is loaded and create a
// progress bar along the bottom of the client area of the
// parent window. Base the height of the progress bar on
// the height of a scroll bar arrow.
InitCommonControls();
hwndPB = CreateWindowEx(0, PROGRESS_CLASS, (LPSTR) NULL,
WS_CHILD | WS_VISIBLE, 0,
0,
400, 20,
hwnd, (HMENU) 0, 0, NULL);

// Open the file for reading, and retrieve the size of the file.
hFile = CreateFile(lpszFileName, GENERIC_READ, FILE_SHARE_READ,
(LPSECURITY_ATTRIBUTES) NULL, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, (HANDLE) NULL);

if (hFile == (HANDLE) INVALID_HANDLE_VALUE)
return FALSE;

cb = GetFileSize(hFile, (LPDWORD) NULL);

// Set the range and increment of the progress bar.
SendMessage(hwndPB, PBM_SETRANGE, 0, MAKELPARAM(0, cb / 2048));
SendMessage(hwndPB, PBM_SETSTEP, (WPARAM) 1, 0);

// Parse the file.
pch = (LPCH) LocalAlloc(LPTR, sizeof(char) * 2048);
pchTmp = pch;
do {
ReadFile(hFile, pchTmp, sizeof(char) * 2048, &cb,
(LPOVERLAPPED) NULL);

// Advance the current position of the progress bar
// by the increment.
SendMessage(hwndPB, PBM_STEPIT, cb, 0);
} while (cb);

When I do that, though, it shows a progress bar, but no progress from STEPIT. I have tried:

SendMessage(hwndPB, PBM_STEPIT, 0, cb);

but it doesn't work either. What do I do? I got most of the code from MSDN!

Try adding a paint msg.

UpdateWindow()

I use

Code:

---

for(i=0;i<Steps;i++)
{
  SendMessage( GetDlgItem(hwndPB,IDC_PROGRESS), PBM_STEPIT, (WPARAM) 0, 0);

---

My hwndPB is of the dialog containing the progress bar though, you would use your hwndPB.

Read the help as to what the (HMENU) parameter of the CreateWindowEx() should be. I think this will also be causing a problem.
//edit
Thats right you use bloodshed
This is from MSVC

"For a child window, hMenu specifies the child-window identifier, an integer value used by a dialog box control to notify its parent about events. The application determines the child-window identifier; it must be unique for all child windows with the same parent window."

The progress is a child of the dialog. Can you be 100% it does not have another ctrl with ID = 0?
Use a hash define and check for confilcts in your resource.h