Timer in Console...

[AnT]

How do I manipulate the WM_TIMER message in a console program? Here is my code:

#include <iostream.h>
#include <windows.h>
void sleep(int milliseconds);
void time();
int main()
{
    HWND myhwnd;
    myhwnd = FindWindow("ConsoleWindowClass", NULL);
    SetTimer(myhwnd, 1, 1000, NULL);
    cout << "Hello." << endl;
    cout << "Exiting in 2 seconds.";
    sleep(2000);
    return 0;
}
void sleep(int milliseconds)
{
    Sleep(milliseconds);
}
void time()
{
    HWND myhwnd;
    myhwnd = FindWindow("ConsoleWindowClass", NULL);
    MessageBox(myhwnd, "Hello, this is a timer", "MOO!!", NULL);
} 

I know there isn't much about timers in there, but if you all could just tell me how to manipulate WM_TIMER, I'd be grateful.

[crptcblade]

You need to setup a TimerProc callback

[i]From MSDN[/i]
VOID CALLBACK TimerProc(
  HWND hwnd,         // handle to window
  UINT uMsg,         // WM_TIMER message
  UINT_PTR idEvent,  // timer identifier
  DWORD dwTime       // current system time
); 

Then pass the address of TimerProc into SetTimer.

[AnT]

Can you give me an example of how to do this? (Just fiddling with C++, really a complete newb...)

[AnT]

So no one has done this before?

[HarryW]

You define whatever you want the timer to do in the TimerProc function (or whatever your function is called), then give SetTimer() a pointer to that function so it can call it whenever the timer goes off.

Crptcblade already gave you the function declaration, you just need to define its content:

VOID CALLBACK TimerProc(
  HWND hwnd,         // handle to window
  UINT uMsg,         // WM_TIMER message
  UINT_PTR idEvent,  // timer identifier
  DWORD dwTime       // current system time
)
{
  // your code here
}

[AnT]

Ok I fixed the error but the message box in the function is not showing up. Here is my code:

//Includes
#include <iostream.h>
#include <windows.h>

//Globals
HWND myhwnd=FindWindow("ConsoleWindowClass", NULL);
//Function Prototypes
void sleep(int milliseconds);
VOID CALLBACK TimerProc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime);
int main()
{
    SetTimer(myhwnd, 1, 1000, (TIMERPROC) &TimerProc);
    cout << "Hello." << endl;
    MessageBox(myhwnd, "Wow, I can make message boxes...haha", "WEEEEE!!!", MB_OK + MB_ICONSTOP);
    cout << "Exiting in 2 seconds.\n";
    //sleep(2000);
    return 0;
}
void sleep(int milliseconds)
{
    Sleep(milliseconds);
}
VOID CALLBACK TimerProc(
  HWND hwnd,         // handle to window
  UINT uMsg,         // WM_TIMER message
  UINT_PTR idEvent,  // timer identifier
  DWORD dwTime       // current system time
)
{
  MessageBox(myhwnd, "HELLO", "HELLO", MB_OK);
} 

[CornedBee]

That doesn't work unless GetMessage is called - so it doesn't work in console apps.

[AnT]

Ok, so how do I make certain events fire off at a certain incrememnt in a console app?

[CornedBee]

You can create a high-performance timer, it's events are fired in a seperate thread.
Basically you don't have timers in console apps, they are designed for linear execution.