Thread: Check this checkbox if you don't want to see this again

Assuming you mean with windows, you can save a boolean value in the registry that indicates that the pop-up should not be shown on subsequent application runs. This is probably how it is done in most cases.

Traditionally, you would have to do this with a custom dialog and store the view setting in the registry or a file. However, last year Microsoft documented a function that does exactly what you want without the mucking around. Below is a wrapper and sample code for SHMessageBoxCheck. This page says SHMessageBoxCheck is available in shlwapi.dll version 5 and above. This means it should be available on Windows 2000/XP/ME/2003 and above and earlier platforms with IE5 or greater installed.

Code:

#include <windows.h>

/*
 * This function is a wrapper for the shell function SHMessageBoxCheck.
 *
 * See the documentation for SHMessageBoxCheck at:
 * http://msdn.microsoft.com/library/en-us/shellcc/platform/shell/reference/shlwapi/others/shmessageboxcheck.asp
 *
 * The ordinals were provided by a usenet post:
 * http://groups-beta.google.com/group/microsoft.public.platformsdk.shell/msg/d638e49f001752b4
 */
int MessageBoxCheck(HWND hwnd, LPCTSTR pszText, LPCTSTR pszTitle, UINT uType, int iDefault, LPCTSTR pszRegVal)
{
	typedef (WINAPI * PSHMBC) (HWND, LPCTSTR, LPCTSTR, UINT, int, LPCTSTR);

	HMODULE hShlwapi          = NULL; 
	PSHMBC  shMessageBoxCheck = NULL;
	int     retValue          = -1;
	WORD    ordinalSHMBC      = (sizeof(TCHAR) == sizeof(WCHAR) ? 191 : 185);

	hShlwapi = LoadLibrary(TEXT("shlwapi.dll"));

	if (hShlwapi)
	{
		shMessageBoxCheck = (PSHMBC) GetProcAddress(hShlwapi, (LPCSTR) ordinalSHMBC);

		if (shMessageBoxCheck)
		{
			/* For some reason SHMessageBoxCheck seems to require that the thread has a
			 * message queue to work correctly. So we call PeekMessage to force the
			 * creation of a message queue. */
			MSG msg; PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE);

			retValue = shMessageBoxCheck(hwnd, pszText, pszTitle, uType, iDefault, pszRegVal);
		}

		FreeLibrary(hShlwapi);
	}

	return retValue;
}

/*
 * Sample showing how to use MessageBoxCheck.
 * Note: You must provide a new guid before using this code in a distributed program.
 */
int main(void)
{
	if (-1 == MessageBoxCheck( NULL, TEXT("Your computer is broken."), TEXT("Warning"),
	                           MB_OK | MB_ICONEXCLAMATION, IDOK,
	                           TEXT("{D85055F7-4AD0-49d9-9686-35F5A53B2233}") ))
	{
		/* If our checked box message box failed, show an ordinary message box. */
		MessageBox(NULL, TEXT("Your computer is broken."), TEXT("Warning"),
		           MB_OK | MB_ICONEXCLAMATION);
	}
}

I think i could write this code.. but I am still in the middle of petzold's 1,400 page book.. I think I would just create a dialogue box with pushbutton and checkbox child window controls.