Difference between revisions of "83Plus:BCALLs:4D53"

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(Example: linkage)
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== Example ==
 
== Example ==
<nowiki> B_CALL AppStartMouse
+
  B_CALL [[83Plus:BCALLs:4D47|AppStartMouse]]
MouseLoop:
+
MouseLoop:
cp 0Ch
+
  cp 0Ch
jr z,MouseDone
+
  jr z,MouseDone
B_CALL AppUpdateMouse
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  B_CALL [[83Plus:BCALLs:4D65|AppUpdateMouse]]
jr MouseLoop
+
  jr MouseLoop
MouseDone:
+
MouseDone:
B_CALL AppEraseMouse
+
  B_CALL AppEraseMouse
ret</nowiki>
+
  ret

Revision as of 08:12, 11 April 2005

Synopsis

Official Name: AppEraseMouse

BCALL Address: 4D53

Erases the mouse cursor. And restores the previous contents.

Inputs

Outputs

  • Mouse cursor erased from screen.

Destroys

  • AF, BC, DE, HL

Comments

You must call AppStartMouse to initialize memory before calling AppEraseMouse. AppEraseMouse erases the mouse cursor when you are done. The below example allows a user to move the mouse cursor around the screen, and returns once the enter key is pressed.

Example

 B_CALL AppStartMouse
MouseLoop:
 cp 0Ch
 jr z,MouseDone
 B_CALL AppUpdateMouse
 jr MouseLoop
MouseDone:
 B_CALL AppEraseMouse
 ret