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>> SPIKA 1: Hebu sasa kuandika mpango
kwamba kwa namna fulani inaingiliana na panya yangu.

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Hasa, hebu instantiate,
au kuunda dirisha.

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Na kisha hebu kusikiliza, hivyo kusema,
ndani ya dirisha kwa Clicks mouse.

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Na kwa haraka kama sisi kuchunguza click panya,
hebu magazeti na printf

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kuratibu x comma y ya kwamba panya
click, jamaa na dirisha.

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>> Hapa sisi kwenda.

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Hebu kwanza ni pamoja na gevents.h, ambayo ni
header faili mwingine katika Stanford

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portable maktaba ambayo inahusiana
na matukio graphical.

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Hebu pia ni pamoja na gwindow.h, ambayo
ina kazi kuhusiana na Windows.

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Hebu sasa kutangaza kuu
katika njia ya kawaida.

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>> Na hebu sasa instantiate dirisha hiyo.

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Gwindow -

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tutaweza kuiita dirisha -

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sawa na newGwindow.

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Na mimi itabidi bayana kwa kiasi fulani kiholela
upana wa 320 pixels na urefu wa

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240 saizi.

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>> Sasa tunahitaji kuendelea kusikiliza
kwa ajili ya matukio panya, hivyo

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kusema, ndani ya dirisha hiyo.

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Sasa matukio inaweza pamoja na Clicks
au drags au harakati.

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Lakini kwa sasa tutaweza kuzingatia
tu juu ya Clicks.

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Mimi nina kwenda kwa makusudi kutumika
usio kitanzi na wakati kujenga,

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tu ili anaendesha mpango huu
milele, au angalau mpaka mimi bonyeza

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X katika juu mkono wa kulia kona.

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>> Kwa kufanya hivyo, hebu kufanya wakati kweli.

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Na kisha ndani ya kitanzi,
lets kuangalia kwanza kwa

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panya tukio kama ifuatavyo.

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Tutaweza kutangaza GEvent, hivyo kusema.

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>> Tutamwita tukio kutofautiana.

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Na sisi ni kwenda kuhifadhi katika
kurudi thamani ya getNextEvent, kupita

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mara kwa mara katika maalum, ambayo kwa
mkataba imeandikwa katika mechi zote,

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aitwaye MOUSE_EVENT.

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Kwa maneno mengine, mahali fulani katika hii
Stanford portable maktaba, kuna

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mara kwa mara aitwaye MOUSE_CLICED.

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Na kuna kazi hufafanuliwa kwamba ni
aitwaye getNextEvent, ambao lengo katika

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maisha ni kufanya hasa kwamba.

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Kusikiliza kwa, na kisha wakati kusikia moja,
anarudi tukio la pili kwamba

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yalisababisha na mtumiaji panya.

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>> Sasa hebu angalia kama
tukio hilo kuwa ni null.

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Kwa sababu si null, na kwamba ni sisi
kweli kusikia kitu kutoka

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mtumiaji panya, tunakwenda kuendelea
kuangalia sasa ni aina gani

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ya tukio hilo alikuwa.

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Kama getEventType, kupita tukio
kama hoja, sawa na usawa

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MOUSE_CLICKED, ambayo hufanyika kuwa
aina maalum ya matukio, ambayo ni

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mara kwa mara nyingine alitangaza katika
Stanford portable maktaba.

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Sasa kama alivyoahidi, hebu sasa magazeti nje
kuratibu ya kwamba click mouse.

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Printf "% 0.0 f.

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>> Kwa maneno mengine, mimi nina kwenda magazeti
nje yaliyo hatua thamani.

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Lakini mimi sitaki kuona chochote
baada ya uhakika decimal.

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Kwa hiyo nitakuwa bayana 0.0.

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Comma,% 0.0 f kwa y kuratibu
vilevile.

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Backslash n quote karibu.

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>> Na sasa hebu kupata x-kuratibu
ya tukio hilo.

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Hiyo ni x-kuratibu
ya click mouse.

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Na kisha hebu kupata y ya tukio hilo,
ambayo ni y kuratibu

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ya click mouse.

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>> Hebu sasa kuokoa, kukusanya,
na kuendesha mpango huu.

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Na wakati mimi kufanya, ni lazima kuwa kesi
kwamba hakuna jambo ambapo mimi bonyeza ndani ya

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mipaka ya hii 320 na 240 pixel
dirisha, mimi lazima basi kuona yangu

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console dirisha x comma y-kuratibu
wapi mimi clicked.

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Kufanya click.

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. / Click.

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Na kuna kuwa dirisha sisi alikadiria.

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>> Sasa basi mimi bonyeza takribani katika juu
mkono wa kushoto kona ya dirisha.

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Katika console yangu screen, naona ya kuwa mimi
kutokea kwa bonyeza x-kuratibu saba

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na y kuratibu saba.

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Hebu sasa bonyeza takribani katika chini
upande wa kulia kona ya dirisha.

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Na mimi kuonekana kuwa clicked juu ya
pixel kuratibu 314, 229.

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>> Hebu sasa kufanya kona ya chini kushoto.

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Na mimi kuona 6, 233.

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Na kona ya juu haki, 305, 4.

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>> Kwa maneno mengine, inaonekana kuwa kesi
kuwa juu upande wa kushoto kona ya

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dirisha yetu ni 0, 0.

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Na chini ya mkono wa kulia kona
ya dirisha yangu ni 320, 240.

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Kwa maneno mengine, mimi ingekuwa kuonekana
hasa wale maadili, alikuwa I just

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kikamilifu iliyokaa panya yangu mshale
katika kila moja ya pembe hizo.

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Hii ni kweli kwa ujumla katika graphical
programu, kama kutumia

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Stanford portable maktaba au zaidi yoyote
mengine, ambapo sisi kuwakilisha juu

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kona kama 0, 0, na chini
upande wa kulia kona kama upana comma

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urefu, kwa kutumia idadi chanya, hata
ingawa ni chini na kulia.

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