COPILOT : PASCAL RESIDENT MEMORY MOUSE CODE

https://copilot.microsoft.com/chats/5HFmkTCJPFQDhYPRggt5f 

Sure thing! Here's a sample code for a memory-resident mouse handler in Pascal. This code hooks into the mouse interrupt vector to create a custom mouse handler.

pascal

program MemoryResidentMouse;

uses
  Dos;

var
  OldInt33: Pointer;

procedure NewInt33; interrupt;
begin
  // Custom mouse handling code goes here
  // Example: Check for left mouse button click
  asm
    mov ax, $0003
    int $33
    cmp bx, 1  // Check if left button is pressed
    jne @NoClick
    // Custom action for left mouse button click
    mov ax, $0002
    int $33
  @NoClick:
  end;

  // Call the original interrupt handler
  asm
    pushf
    call dword ptr OldInt33
  end;
end;

begin
  // Save the old interrupt vector and set the new one
  GetIntVec($33, OldInt33);
  SetIntVec($33, @NewInt33);

  // Keep the program resident in memory
  Keep(0);
end.

Here's a brief explanation of the code:

1. OldInt33: This variable stores the pointer to the original mouse interrupt handler.

2. NewInt33: This is the custom interrupt handler that intercepts mouse events. It checks if the left mouse button is pressed and performs a custom action.

3. GetIntVec and SetIntVec: These procedures get and set the interrupt vector for the mouse interrupt.

4. Keep: This procedure keeps the program resident in memory.

Feel free to modify this code to suit your specific needs. If you have any further questions or need more details, just let me know! 😊