C / C++ / MFC

Mark Salsbery wrote:

If you only have one thread there's no way to halt that thread and have anything else happen in your windows or window proc(s) (aside from asynchronous
callbacks, of course, but those are separate threads).

With a single thread, while a windowproc is handling a message, all other window procs are halted.

LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
			// Message handleing callback function.
	switch (uMsg) {	// Check for defined messages.
		...
	case WM_KEYDOWN:// WM_KEYDOWN message
		...
		OnKeyDown(wParam, lParam);
			// Call WM_KEYDOWN event handler.
		break;
		...
	}
	...
}

...

void OnKeyDown(int pKeyCode, DWORD pFlags) {
			// WM_KEYDOWN event handler.
	...
	switch (pKeyCode) {
			// Process based on key pressed...
	case 122:	// 'F11' pressed.
		...
		DestroyWin();
			// Destroy existing window.
		CreateWin();
			// Recreate window.
		break;
	case VK_RETURN:	// Return key pressed.
		if (GetKeyState(VK_MENU)) {
			// If alt key is down...
			...
			DestroyWin();
				// Destroy existing window.
			CreateWin();
				// Recreate window.
		}
		break;
	}
}

Pavan Berkeley wrote:

So we are looking at updating 4 dialog boxes from that thread.

 void yourecrazy()
{
    string str = "you are crazy";
    cout << str.c_str() << endl;
    str.clear();
    cout << str.c_str() << endl;
    str = "you are crazy";
    cout << str.c_str() << endl;
}

<br />
string password="logmein";<br />
stringstream loginsys;<br />
string loggedin;<br />
string loggedin2="Loggedin";<br />
<br />
bool loginsystem(const string& login){ <br />
	if(buff.find(password) != string::npos){<br />
		loginsys << "Loggedin";<br />
		loggedin=loginsys.str();<br />
		cout << "Logged in " << endl;<br />
		return true;<br />
	}<br />
	else{<br />
		cout << "Cannot log you in " << endl;<br />
		return false;<br />
	}<br />
}<br />
<br />
void logout(void){<br />
	loggedin.erase();<br />
	loggedin2.erase();<br />
	cout << "Your now logged out. " << endl;<br />
}<br />
<br />
if(buff.find(".hi") != string::npos){<br />
		if(buff.find(host) != string::npos){<br />
			if(loggedin == loggedin2){<br />
				cout << "Hello " << endl;<br />
			}<br />
		}<br />
}<br />

dellthinker wrote:

i cant seem to find out how to fill it agai

DavidCrow wrote:

Where are you trying to assign loggedin and loggedin2 new values?

<br />
void logout(void){<br />
	string empty="";<br />
	string empty2="";<br />
	loggedin=empty;<br />
	loggedin2=empty;<br />
	cout << "Your now logged out. " << endl;<br />
}<br />