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Application Program Structure

An RTPEG-32 program's main function should perform the following steps:

• If RTKernel-32 is used, RTKernelInit() should be called first.
• A screen device driver (a PegScreen object) must be created.
• Objects PegMessageQueue and PegPresentationManager must be created. This is done by calling function PegInitialize().
• If mouse support is desired, the RTTarget-32 mouse driver must be initialized.
• All initial UI objects such as windows and control must be added to the PegPresentationManager. This will typically be done by function PegAppInitialize().
• Multithreaded applications can create additional threads at this point.
• The RTPEG-32 message loop is executed by calling PegExecute. Function PegExecute will not return before the application has terminated.

Example:

int main(void) 
{ 
   PegScreen * pScreen = CreatePegScreen_VESA_8(); 
   PegPresentationManager * pPresent = 
      PegInitialize(pScreen, sizeof(class PegScreen)); 

   RTInitMouse(-1, 12, 0, 5, 5); // this is for a PS2 mouse 
   RTSetMousePos(pScreen->GetXRes() / 2, pScreen->GetYRes() / 2); 

   PegAppInitialize(pPresent); 

   PegExecute(pPresent); 

   RTMouseDone(); 
   return 0; 
} 

void PegAppInitialize(PegPresentationManager * pPresentation) 
{ 
    PegRect Rect; 
    Rect.Set(0, 0, 399, 319); 
    RobotFrame * pFrame = new RobotFrame(Rect); 
    pPresentation->Center(pFrame); 
    pPresentation->Add(pFrame); 
}

Programming with RTPEG-32

Rules Of Memory Ownership