DISPLAY (function): Difference between revisions
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{{Cl|PRINT}} "Hello World!" | {{Cl|PRINT}} "Hello World!" | ||
{{Cl|DO}}: {{Cl|_LIMIT}} 30 | {{Cl|DO}}: {{Cl|_LIMIT}} 30 | ||
{{Cl|DO}} {{Cl|WHILE}} {{Cl|_MOUSEINPUT}}: {{Cl|LOOP}} 'main loop must contain _MOUSEINPUT | {{Cl|DO}} {{Cl|WHILE}} {{Cl|_MOUSEINPUT}}: {{Cl|LOOP}} 'main loop must contain _MOUSEINPUT | ||
' other program code | ' other program code | ||
{{Cl|LOOP}} | {{Cl|LOOP}} | ||
| Line 35: | Line 35: | ||
{{Cl|_DISPLAY}} 'statement shows image | {{Cl|_DISPLAY}} 'statement shows image | ||
{{Cl|PCOPY}} 100, {{Cl|_DISPLAY (function)|_DISPLAY}} 'with the function return as destination page | {{Cl|PCOPY}} 100, {{Cl|_DISPLAY (function)|_DISPLAY}} 'with the function return as destination page | ||
{{Cl|END SUB}} | {{Cl|END SUB}} | ||
{{CodeEnd}} | {{CodeEnd}} | ||
''Note:'' Works with the '''_DISPLAY function''' return as the other page. If mouse reads are not crucial, put the [[_MOUSEINPUT]] loop inside of the UpdateCursor SUB. | ''Note:'' Works with the '''_DISPLAY function''' return as the other page. If mouse reads are not crucial, put the [[_MOUSEINPUT]] loop inside of the UpdateCursor SUB. | ||
Revision as of 01:30, 23 January 2023
The _DISPLAY function returns the handle of the current image that is displayed on the screen.
Syntax
- currentImage& = _DISPLAY
Description
- Returns the current image handle value that is being displayed. Returns 0 if in the default screen image.
- Not to be confused with the _DISPLAY statement that displays the screen when not using _AUTODISPLAY.
Examples
Example: Creating a mouse cursor using a page number that you create in memory without setting up page flipping.
SCREEN _NEWIMAGE(640, 480, 32) 'any graphics mode should work without setting up pages _MOUSEHIDE SetupCursor PRINT "Hello World!" DO: _LIMIT 30 DO WHILE _MOUSEINPUT: LOOP 'main loop must contain _MOUSEINPUT ' other program code LOOP SUB SetupCursor ON TIMER(0.02) UpdateCursor TIMER ON END SUB SUB UpdateCursor PCOPY _DISPLAY, 100 'any page number as desination with the _DISPLAY function as source PSET (_MOUSEX, _MOUSEY), _RGB(0, 255, 0) DRAW "ND10F10L3F5L4H5L3" _DISPLAY 'statement shows image PCOPY 100, _DISPLAY 'with the function return as destination page END SUB |
Note: Works with the _DISPLAY function return as the other page. If mouse reads are not crucial, put the _MOUSEINPUT loop inside of the UpdateCursor SUB.
See also
- SCREEN
- PCOPY
- _DISPLAY (statement)
- _AUTODISPLAY (default mode)
- _DISPLAYORDER (statement)