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https://github.com/QB64-Phoenix-Edition/QB64pe.git
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57 lines
1.5 KiB
Plaintext
57 lines
1.5 KiB
Plaintext
{{DISPLAYTITLE:_RESIZE (function)}}
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The [[_RESIZE]] function returns true (-1) when a user has attempted to resize the program window and [[$RESIZE]]:ON has allowed it.
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{{PageSyntax}}
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: IF '''_RESIZE''' THEN rx& = [[_RESIZEWIDTH]]: ry& = [[_RESIZEHEIGHT]]
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{{PageDescription}}
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* The function returns -1 if a program screen resize was attempted by the user.
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* After the function returns -1, [[_RESIZEWIDTH]] and [[_RESIZEHEIGHT]] can return the new requested dimensions in pixels.
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* The [[$RESIZE]]:ON [[metacommand]] must be used so the program is created with a user resizable window.
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==Availability==
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* '''Version 1.000 and up'''.
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{{PageExamples}}
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''Example:'' Resize the current screen image according to user's request.
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{{CodeStart}}
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{{Cl|$RESIZE}}:ON
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s& = {{Cl|_NEWIMAGE}}(300, 300, 32)
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{{Cl|SCREEN}} s&
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bee& = {{Cl|_LOADIMAGE}}("qb64_trans.png") 'any image
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{{Cl|DO}}
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{{Cl|IF}} {{Cl|_RESIZE (function)|_RESIZE}} THEN
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oldimage& = s&
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s& = _NEWIMAGE(_RESIZEWIDTH, _RESIZEHEIGHT, 32)
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SCREEN s&
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{{Cl|_FREEIMAGE}} oldimage&
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END IF
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{{Cl|CLS}}
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'Center the QB64 bee image:
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x = {{Cl|_WIDTH (function)|_WIDTH}} / 2 - _WIDTH(bee&) / 2
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y = {{Cl|_HEIGHT}} / 2 - _HEIGHT(bee&) / 2
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{{Cl|_PUTIMAGE}} (x, y), bee&
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{{Cl|_DISPLAY}}
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{{Cl|_LIMIT}} 30
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{{Cl|LOOP}}
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{{CodeEnd}}
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{{PageSeeAlso}}
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* [[$RESIZE]] {{text|(metacommand)}}
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* [[_RESIZE]]
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* [[_RESIZEWIDTH]], [[_RESIZEHEIGHT]] {{text|(requested pixel dimensions)}}
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{{PageNavigation}}
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