Thread: Mouse + Animation Trouble

I am trying to program a mouse into my program. My mouse function stores all of the pixels under the cursor into a matrix called umouse. It then draws the cursor. Whenever the mouse moves, the mouse is erased using the umouse data, then umouse stores the new data while the cursor is being drawn.

Only one problem...
Whenever some other object moves over the mouse, i.e. a moving colored tile moves over the cursor, when the cursor moves, it deletes part of the other object (colored tile) and replaces it with the umouse data.

How can I make a decent mouse function that doesn't change any other part of the screen?

I am using Turbo C++ 1.00

Attached is the code that I used.

It would be nice if you told us a little bit more information. Like, what kind of compiler are you using, what video mode.
Oyherwise, you could try (if you are using a borland) downloading the svgacc lib file from :
http://www.zephyrsoftware.com
and adding it to your project for compilation.

tell us more


Stef

The original mouse handler use XOR and AND to do this.

However, if you use a double buffer you can do this as well.




To trap mouse clicks use subfuntion 03h.


void GetMousePosition(void)
{
union REGS regs;
regs.x.ax=0x03;
int86(0x33,& regs, & regs);

int ButtonDown=regs.x.bx;
int XPos=regs.x.cx;
int YPos=regs.x.dx;
}


For graphic mode resolutions below 640 you must divide CX by 2 to get the correct result. int XPos=regs.x.cx>>1;

is GetMousePosition() a function from the svgacc-lib-thingy that was mentioned, or is it elsewhere?

No, I just coded that for my post.