win32 openGL adding line segments

[DSvMDjzh]

The goal of the program is for line segments to be drawn every 20ms that follow the cursor. Right now I have it so it follows the cursor with one attached point, I am at a loss to get it to draw continuously. This is how I how I tried doing it but couldn't figure out how to add vertices on th go.
This is where I would like more vertices to be added.

{
			
			// OpenGL animation code goes here
			
			glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
			glClear( GL_COLOR_BUFFER_BIT );
			
			glPushMatrix();
			glBegin(GL_LINE_STRIP);
			for(int i=0;i<Index;i++){
				glColor3f(1.0f,0.0f,0.0f); glVertex2f(-1.0,-1.0);
				glColor3f(1.0f,0.0f,0.0f); glVertex2f(xPosg, yPosg);	
			}//end for i 
			glEnd();

			glPopMatrix();
			
			SwapBuffers( hDC );
			
		}

This is the array and timer

bool InitTimer(HWND hWnd){
	bool out=FALSE;

	out = SetTimer(hWnd,TIMER_ID,TIMER_INTERVAL,(TIMERPROC)TimerTick);

	
	return out;
}//end TimerControl

bool StopTimer(HWND hWnd){
	bool out=FALSE;

	out = KillTimer(hWnd,TIMER_ID);


	return out;
}//end Stoptimer


 //Called every TIMER_INTERVAL milliseconds*/
void TimerTick(void){
	/*Data[x][0] -> X position
	  Data[x][1] -> Y Position
	  */

	static int count=0;

	if(count==20){
		count=0;
		Data[Index][0]=xPosg;
		Data[Index][1]=yPosg;
		Index++;

	}
	
	
}//end TimerTick 

Thanks,

Josh

[Vexer]

Try moving glBegin and glEnd to within your for loop.

[DSvMDjzh]

Wouldn't that just show the one line strip... It wouldn't add another vertex point.

[Vexer]

It would create a new line every iteration of the loop.

[DSvMDjzh]

It works now. Had to change up the for loop a little bit but no major alterations.

Thank you very much,

Josh