[1350] | 1 | #include "xdemo.h" |
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| 2 | |
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| 3 | void init_x () { |
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| 4 | |
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| 5 | dis = XOpenDisplay ( NULL ); |
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| 6 | if ( dis == NULL) |
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| 7 | { |
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| 8 | fprintf ( stderr , "Display: connection impossible\n"); |
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| 9 | exit (1); |
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| 10 | } |
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| 11 | |
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| 12 | screen = DefaultScreen ( dis ); |
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| 13 | depth = DefaultDepth ( dis , screen ); |
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| 14 | width = DisplayWidth ( dis , screen ); |
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| 15 | height = DisplayHeight ( dis , screen ); |
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| 16 | |
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| 17 | if ( depth != 24 ) |
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| 18 | { |
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| 19 | fprintf ( stderr , "This code works only in 24 bpp..\n" ); |
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| 20 | XCloseDisplay ( dis ); |
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| 21 | exit (1); |
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| 22 | } |
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| 23 | |
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| 24 | winRoot = DefaultRootWindow ( dis ); |
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| 25 | winAttr.border_pixel = BlackPixel ( dis , screen ); |
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| 26 | winAttr.background_pixel = BlackPixel ( dis , screen ); |
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| 27 | winMask = CWBackPixel | CWBorderPixel; |
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| 28 | |
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| 29 | win = XCreateWindow ( dis , winRoot , X , Y , W , H , BORDER , depth , |
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| 30 | InputOutput , CopyFromParent , winMask , &winAttr ); |
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| 31 | |
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| 32 | XStoreName ( dis , win , NAME ); |
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| 33 | |
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| 34 | XSelectInput ( dis , win , KeyPressMask ); |
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| 35 | |
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| 36 | winHint.flags = PPosition | PMinSize | PMaxSize ; |
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| 37 | winHint.x = X; |
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| 38 | winHint.y = Y; |
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| 39 | winHint.max_width = winHint.min_width = W; |
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| 40 | winHint.max_height = winHint.min_height = H; |
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| 41 | XSetWMNormalHints ( dis , win , &winHint ); |
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| 42 | |
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| 43 | XClearWindow ( dis , win ); |
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| 44 | XMapRaised ( dis , win ); |
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| 45 | XFlush ( dis ); |
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| 46 | |
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| 47 | buffer = ( char * ) malloc ( 4*W*H ); |
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| 48 | xim = XCreateImage ( dis , CopyFromParent , depth , ZPixmap , 0 , |
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| 49 | buffer , W , H , 32 , W*4 ); |
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| 50 | |
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| 51 | gcVal.foreground = 0; |
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| 52 | gcVal.background = 0; |
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| 53 | gcMask = GCForeground | GCBackground; |
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| 54 | |
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| 55 | gc = XCreateGC ( dis , win , gcMask , &gcVal ); |
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| 56 | |
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| 57 | } |
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| 58 | |
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| 59 | |
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| 60 | int event_x () { |
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| 61 | |
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| 62 | XEvent XEv; |
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| 63 | |
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| 64 | return ( ! XCheckWindowEvent ( dis , win , KeyPressMask , &XEv ) ); |
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| 65 | |
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| 66 | } |
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| 67 | |
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| 68 | |
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| 69 | void close_x () { |
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| 70 | |
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| 71 | XFreeGC ( dis , gc ); |
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| 72 | XDestroyImage ( xim ); |
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| 73 | XDestroyWindow ( dis , win ); |
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| 74 | XCloseDisplay ( dis ); |
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| 75 | |
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| 76 | }; |
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| 77 | |
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