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Hi Noorez,

The problem is in your switch structure. Your callback function doesn't
return a value from WM_PAINT. Replace the break statement at the end of
your case with a "return 0" statement, and I think that might fix your
problem.

Also. note that the braces around the code in your WM_PAINT case are not
necessary. You don't need to use braces to group case statements as all of
hem will execute up until it encounters a break or return.

Try replacing "break" with "return 0;" and also removing the braces from
the WM_PAINT case. That might fix your problem.

On Wed, 24 Dec 2003, Noorez Kassam wrote:

> This WinApp closes too fast to see results
>
> #include <windows.h>
>
>
> LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsgId, WPARAM wParam, LPARAM
> lParam);
>
> int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR
> pszCmdLine, int nCmdShow)
> {
> 	static char szAppName[] = "hello";
> 	HWND hWnd;
> 	MSG msg;
> 	WNDCLASSEX wndClass;
>
> 	//register class
> 	wndClass.style = 0;
> 	wndClass.lpfnWndProc = WindowProc;
> 	wndClass. cbClsExtra = 0;
> 	wndClass.hInstance = hInstance;
> 	wndClass.hIcon = LoadIcon( hInstance, szAppName);
> 	wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
> 	wndClass.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
> 	wndClass.lpszMenuName = NULL;
> 	wndClass.lpszClassName = szAppName;
> 	wndClass.hIconSm = wndClass.hIcon;
>
> 	if(RegisterClassEx(&wndClass)==0)//register class...
> 		return 0;  //quit if it doesn't work
>
> 	//now create window
> 	hWnd = CreateWindow(szAppName, szAppName, WS_OVERLAPPEDWINDOW,
> CW_USEDEFAULT, CW_USEDEFAULT,
> 		                 CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance,
> NULL);
>
> 	if(hWnd == NULL)
> 		return 0;
>
> 	ShowWindow(hWnd, nCmdShow);
> 	UpdateWindow( hWnd );
>
> 	while( GetMessage(&msg, NULL, 0,0))
> 	{
> 		TranslateMessage(&msg);
> 		DispatchMessage(&msg);
> 	}
> 	return msg.wParam;
> }
>
>
> //process functions
> LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsgId, WPARAM wParam, LPARAM
> lParam)
> {
> 	static char *pszHello = "Hello, world";
>
> switch(uMsgId)
> 	{
> 	case WM_PAINT:
> 		{
> 			HDC hDC;
> 			PAINTSTRUCT paintStruct;
>
> 			hDC = BeginPaint( hWnd, &paintStruct);
>
> 			TextOut(hDC, 0,0, pszHello, lstrlen(pszHello));
>
> 			EndPaint( hWnd, &paintStruct );
> 		}
> 		break;
>
> 	case WM_DESTROY:
> 			PostQuitMessage(0);
>
> 			break;
>
> 	default:
> 		return DefWindowProc(hWnd,uMsgId,wParam,lParam);
> 	}
> 	return 0;
> }
>
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This WinApp closes too fast to see results

#include <windows.h>


LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsgId, WPARAM wParam, LPARAM 
lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR 
pszCmdLine, int nCmdShow)
{
	static char szAppName[] = "hello";
	HWND hWnd;
	MSG msg;
	WNDCLASSEX wndClass;

	//register class
	wndClass.style = 0;
	wndClass.lpfnWndProc = WindowProc;
	wndClass. cbClsExtra = 0;
	wndClass.hInstance = hInstance;
	wndClass.hIcon = LoadIcon( hInstance, szAppName);
	wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
	wndClass.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
	wndClass.lpszMenuName = NULL;
	wndClass.lpszClassName = szAppName;
	wndClass.hIconSm = wndClass.hIcon;

	if(RegisterClassEx(&wndClass)==0)//register class...
		return 0;  //quit if it doesn't work

	//now create window
	hWnd = CreateWindow(szAppName, szAppName, WS_OVERLAPPEDWINDOW, 
CW_USEDEFAULT, CW_USEDEFAULT,
		                 CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, 
NULL);

	if(hWnd == NULL)
		return 0;

	ShowWindow(hWnd, nCmdShow);
	UpdateWindow( hWnd );

	while( GetMessage(&msg, NULL, 0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}


//process functions
LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsgId, WPARAM wParam, LPARAM 
lParam)
{
	static char *pszHello = "Hello, world";

switch(uMsgId)
	{
	case WM_PAINT:
		{
			HDC hDC;
			PAINTSTRUCT paintStruct;

			hDC = BeginPaint( hWnd, &paintStruct);

			TextOut(hDC, 0,0, pszHello, lstrlen(pszHello));

			EndPaint( hWnd, &paintStruct );
		}
		break;

	case WM_DESTROY:
			PostQuitMessage(0);

			break;

	default:
		return DefWindowProc(hWnd,uMsgId,wParam,lParam);
	}
	return 0;
}

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My system pause function in this program is not read at the end of the 
program so i can't
see the results.


// This program copies the contents of one file
// to another file.

// Program file: copyfile.cpp

#include <iostream>
#include <fstream>
#include <cstdlib>
using namespace std;

int main()
{
	ifstream in_file;
	char ch;
	in_file.open("myfile.txt");
	in_file.get(ch);
	while (! in_file.eof() && ! in_file.fail())
	{
        cout << ch;
        in_file.get(ch);
    }

in_file.close();
system("pause");
}

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My windows APP is closing before i see any results! It complies fine but it 
just closes

#include <windows.h>


LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsgId, WPARAM wParam, LPARAM 
lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR 
pszCmdLine, int nCmdShow)
{
	static char szAppName[] = "hello";
	HWND hWnd;
	MSG msg;
	WNDCLASSEX wndClass;

	//register class
	wndClass.style = 0;
	wndClass.lpfnWndProc = WindowProc;
	wndClass. cbClsExtra = 0;
	wndClass.hInstance = hInstance;
	wndClass.hIcon = LoadIcon( hInstance, szAppName);
	wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
	wndClass.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
	wndClass.lpszMenuName = NULL;
	wndClass.lpszClassName = szAppName;
	wndClass.hIconSm = wndClass.hIcon;

	if(RegisterClassEx(&wndClass)==0)//register class...
		return 0;  //quit if it doesn't work

	//now create window
	hWnd = CreateWindow(szAppName, szAppName, WS_OVERLAPPEDWINDOW, 
CW_USEDEFAULT, CW_USEDEFAULT,
		                 CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, 
NULL);

	if(hWnd == NULL)
		return 0;

	ShowWindow(hWnd, nCmdShow);
	UpdateWindow( hWnd );

	while( GetMessage(&msg, NULL, 0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}


//process functions
LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsgId, WPARAM wParam, LPARAM 
lParam)
{
	static char *pszHello = "Hello, world";

switch(uMsgId)
	{
	case WM_PAINT:
		{
			HDC hDC;
			PAINTSTRUCT paintStruct;

			hDC = BeginPaint( hWnd, &paintStruct);

			TextOut(hDC, 0,0, pszHello, lstrlen(pszHello));

			EndPaint( hWnd, &paintStruct );
		}
		break;

	case WM_DESTROY:
			PostQuitMessage(0);

			break;

	default:
		return DefWindowProc(hWnd,uMsgId,wParam,lParam);
	}
	return 0;
}

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Hi
I've been getting many emails from the group in recent months which arrive
empty, my IT dept has tried to find out the cause since they seem to get to
the group host site OK & I have had the following response:


-----Original Message-----
From: SurfControl UK/EMEA Tech Support (CO) [mailto:su...@Su...]

Sent: 19 December 2003 16:48
To: 'Jason Walker'
Subject: RE: empty emails

Hi Jason,

We have been investigating the issue that you have reported regarding the
message body being removed by the email filter.  This issue is being caused
because the footer that is being applied to the message by the sender.  The
footer is outside the defined boundaries of the message, this causes the
email filter to enclose the footer within the last boundary thus when the
message is viewed it reads the footer as the message body.  Would it be
possible to ask the sender not to apply the footer or to enclose the footer
in the message body and not outside the boundary?

Regards,
Ian

--------------------



Has anyone else had problems of the same sort or know a fix ?
Best regards & seasonal greeting to all.
Mark

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