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And if Mr Crow's links aren't enough, I've provided code for you here[^]
There's no need to post on multiple discussion boards! I took the time to write and test code
and post it for you and come here and see you had at least 3 solutions. Grrr 
Mark
"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder
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Mark Salsbery wrote: There's no need to post on multiple discussion boards!
At this point we may as well just add it as a suggested practice on the "How to get an answer to your question" post. Given how infrequently those guidelines are followed we might gain some ground.
led mike
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There's guidelines?
"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder
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Not sure you follow me. I mean add item 12. to say: You should post your question multiple times and on multiple forums to improve your odds of getting an answer.
Since items 1. thru 11. are rarely ever followed we might end up reducing the number of multiple posts and cross posting.
led mike
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Or simply mark the post from Chris Maunder as urgent???
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led mike wrote: I mean add item 12. to say: You should post your question multiple times and on multiple forums to improve your odds of getting an answer.
Yeah...that's good for the first version upgrade.
But I'm thinking ahead to the future...nobody's going to read the item 12. I think we'll soon
find that most people will post to just one board.
To fix this, I propose the item is emblazened across the top of the page in big red flashing block letters (flames optional).
"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder
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Mark Salsbery wrote: nobody's going to read the item 12.
Bah, this should be easily fixed. Simply say that it's strictly forbidden to read item 12 at the top. Everybody would jump right to item 12 skipping the items before it. 
"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown
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Excellent idea  I hope led mike is writing this stuff down!
"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder
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Mark Salsbery wrote: But I'm thinking ahead to the future...nobody's going to read the item 12.
In that case, we need to add some "Flash" content to that post. Or may be we try "Silverlight". The 12th point will be flashing in red, brown, magenta, and dark green colors, alternatively.
Shog on learning VB6: Ah, that would have been VB6. Kicked my ass anyway.
So easy to learn, just like falling down a flight of stairs...
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The animated ads are distracting enough!
Come to think of it, I ignore the ads so maybe I'd ignore the blazing flashing posting rules.
Maybe this scheme isn't going to work at all...
Mark
p.s. I wonder what happened to the OP...
"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder
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// Hassancap.cpp : Defines the entry point for the application.
//
#include "stdafx.h"
#include "Hassancap.h"
#define MAX_LOADSTRING 100
// Global Variables:
HINSTANCE hInst; // current instance
TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name
// Forward declarations of functions included in this code module:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
// TODO: Place code here.
MSG msg;
HACCEL hAccelTable;
// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_HASSANCAP, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_HASSANCAP));
// Main message loop:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int) msg.wParam;
}
//
// FUNCTION: MyRegisterClass()
//
// PURPOSE: Registers the window class.
//
// COMMENTS:
//
// This function and its usage are only necessary if you want this code
// to be compatible with Win32 systems prior to the 'RegisterClassEx'
// function that was added to Windows 95. It is important to call this function
// so that the application will get 'well formed' small icons associated
// with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_HASSANCAP));
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = MAKEINTRESOURCE(IDC_HASSANCAP);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
return RegisterClassEx(&wcex);
}
//
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;
hInst = hInstance; // Store instance handle in our global variable
hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
// hWnd = CreateWindow(szWindowClass, szTitle, WS_POPUPWINDOW|WS_CAPTION|WS_VISIBLE,
//480, 400, 320, 240, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}
//
// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for the main window.
//
// WM_COMMAND - process the application menu
// WM_PAINT - Paint the main window
// WM_DESTROY - post a quit message and return
//
//
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
PAINTSTRUCT ps ;
RECT rect ;
HDC hdcWindow;
static int nScreenWidth, nScreenHeight;
switch (message)
{
case WM_CREATE:
nScreenWidth = GetSystemMetrics(SM_CXSCREEN);
nScreenHeight = GetSystemMetrics(SM_CYSCREEN);
SetTimer( hwnd,0,2000,NULL);
return 0 ;
case WM_LBUTTONDOWN:
{
HWND tBarHandle= NULL;
return 0;
}
case WM_PAINT:
{
hdc = BeginPaint (hwnd, &ps) ;
hdcWindow = GetWindowDC( hwnd);
HWND hDesktopWnd = GetDesktopWindow();
HDC Source = GetDC(hDesktopWnd);
HDC Destination = CreateCompatibleDC(Source);
HBITMAP hCaptureBitmap =CreateCompatibleBitmap(Source, nScreenWidth, nScreenHeight);
SelectObject(Destination,hCaptureBitmap);
BitBlt(Destination,0,0,nScreenWidth,nScreenHeight, Source, 0, 0, SRCCOPY);
BitBlt(hdc,0,0 , nScreenWidth, nScreenHeight, Source, 0,0, SRCCOPY);
ReleaseDC(hDesktopWnd,Destination);
DeleteDC(Source);
DeleteObject(hCaptureBitmap);
EndPaint (hwnd, &ps) ;
}
return 0 ;
case WM_TIMER:
GetClientRect(hwnd,&rect);
InvalidateRect( hwnd, &rect, true);
return 0;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
How to convert DDB format to DIB format using GETDIBits() function ...
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and you think that by posting a huge piece of code (not even formatted correctly), with a title that is far from being representative of you problem, by spamming the board (yeah, asking a question more than once is quite always bad seen) and with a question summed up in on of the smallest lines that can be people will help you ? seriously 
you'd better start reading this[^] and this[^] first...
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And one thing that you forgot to tell when post a code use of Pre tags.;)
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Yeah I see your answer "and you think that by posting a huge piece of code (not even formatted correctly)," 
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toxcct wrote: seriously
Same here,
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toxcct wrote: with a question summed up in on of the smallest lines that can be people will help you ? seriously
he he he
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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google
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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Hi,
I need to write a large amount of data continuosly to the harddrive at a max rate of 5 ms. Is this possible just to take data from memory and constantly write it to hard drive without making it lose any data. Or do I have to do something fancy to ensure this? This data will be continuously coming in for like a few hours.
Thanks in advance.
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There is nothing to fear about.
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nothing on the code side... but if its a fast hard drive 10k or an old hard drive
heat might be a problem if the disk is fragmented or poorly ventilated.
overheating kills hard drives very quickly. (my 7.5krpm drive heats up quick not sure if I’d want to be writing data to it for hours without a break).
This is something I've not coded myself but if your application is important you might want to checkout a way to detect the temperature of the hard drive. Not sure, but you could use SMART to get the temperature
Wikipedia entry
Just a thought
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