Yesno

Hi all.

First off, I'm a total newbie to windows programming, and have a few questions.

1. I have a YES/NO messagebox, and I want to know what code is required to determine which button the user pressed. I tried this in a while loop :

Code:

---

MessageBox(NULL, " Some random text ", "  Random text", MB_YESNO | MB_ICONEXCLAMATION);

if ( IDYES )
{
    cout<<"Blah Blah Blah.";
    MessageBox(NULL, " Some random text ", "  Random text", MB_YESNO | MB_ICONEXCLAMATION);

}

---

But which ever button the user pressed, the message pops up again. Is this the correct syntax ? I can post the rest of the loop if you want.

2. Forgot what 2 was, but It'll come back to me.

Please help !
I'm confused. :confused:

You have to save the return value of the MessageBox function.

Code:

---


retval = MessageBox(...);

if( retval == IDYES)
{
        ...
}

---

if(IDYES) is like saying if(0) or if(1) - you'll always get the same answer, and the stuff inside the if() will either always or never execute. (A good compiler, with some warnings turned on, will note this. I believe gcc does it with -Wall)

What you need to do is store the result of MessageBox() somewhere, in a variable. Then see if that variable is equal to IDYES. Example:

Code:

---

int mb_result = 0;

mb_result = MessageBox(HWND_DESKTOP, "Text", "Text", MB_YESNO);
if(mb_result == IDYES)
{
  // User clicked Yes.
}
else
{
  // User clicked no.
}

---

Or, to hide temp variables:

Code:

---

switch(MessageBox(...))
{
  case IDYES:
  {
    break;
  }

  case IDNO:
  {
    break;
  }

  case IDCANCEL:
  {
    break;
  }
}

---

or simply

Code:

---

if (MessageBox(...)==IDYES)
{
  ...
}
else
{
  ...
}

---