Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_CreateCursor.3 @ 1248:d2c6881935be
Catch X11 extension errors...since most of these are notifications that we
queried for a missing extension (such as the XiG vidmode one that most
people don't have), and default Xlib behaviour is to write notification to
stderr, this tends to generate incorrect bug reports.
Since we'll actually deal with the missing extension when querying for it,
we ignore these errors in our hook. The rest continue to pass through to
the default handler.
Fixes Bugzilla #42.
--ryan.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sat, 14 Jan 2006 08:15:38 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_CreateCursor" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_CreateCursor\- Creates a new mouse cursor\&. | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBSDL_Cursor *\fBSDL_CreateCursor\fP\fR(\fBUint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 Create a cursor using the specified \fBdata\fR and \fBmask\fR (in MSB format)\&. The cursor width must be a multiple of 8 bits\&. | |
| 12 .PP | |
| 13 The cursor is created in black and white according to the following: | |
| 14 .TP 20 | |
| 15 \fBData / Mask\fR | |
| 16 \fBResulting pixel on screen\fR | |
| 17 .TP 20 | |
| 18 0 / 1 | |
| 19 White | |
| 20 .TP 20 | |
| 21 1 / 1 | |
| 22 Black | |
| 23 .TP 20 | |
| 24 0 / 0 | |
| 25 Transparent | |
| 26 .TP 20 | |
| 27 1 / 0 | |
| 28 Inverted color if possible, black if not\&. | |
| 29 .PP | |
| 30 Cursors created with this function must be freed with \fISDL_FreeCursor\fR\&. | |
| 31 .SH "EXAMPLE" | |
| 32 .PP | |
| 33 .nf | |
| 34 \f(CW/* Stolen from the mailing list */ | |
| 35 /* Creates a new mouse cursor from an XPM */ | |
| 36 | |
| 37 | |
| 38 /* XPM */ | |
| 39 static const char *arrow[] = { | |
| 40 /* width height num_colors chars_per_pixel */ | |
| 41 " 32 32 3 1", | |
| 42 /* colors */ | |
| 43 "X c #000000", | |
| 44 "\&. c #ffffff", | |
| 45 " c None", | |
| 46 /* pixels */ | |
| 47 "X ", | |
| 48 "XX ", | |
| 49 "X\&.X ", | |
| 50 "X\&.\&.X ", | |
| 51 "X\&.\&.\&.X ", | |
| 52 "X\&.\&.\&.\&.X ", | |
| 53 "X\&.\&.\&.\&.\&.X ", | |
| 54 "X\&.\&.\&.\&.\&.\&.X ", | |
| 55 "X\&.\&.\&.\&.\&.\&.\&.X ", | |
| 56 "X\&.\&.\&.\&.\&.\&.\&.\&.X ", | |
| 57 "X\&.\&.\&.\&.\&.XXXXX ", | |
| 58 "X\&.\&.X\&.\&.X ", | |
| 59 "X\&.X X\&.\&.X ", | |
| 60 "XX X\&.\&.X ", | |
| 61 "X X\&.\&.X ", | |
| 62 " X\&.\&.X ", | |
| 63 " X\&.\&.X ", | |
| 64 " X\&.\&.X ", | |
| 65 " XX ", | |
| 66 " ", | |
| 67 " ", | |
| 68 " ", | |
| 69 " ", | |
| 70 " ", | |
| 71 " ", | |
| 72 " ", | |
| 73 " ", | |
| 74 " ", | |
| 75 " ", | |
| 76 " ", | |
| 77 " ", | |
| 78 " ", | |
| 79 "0,0" | |
| 80 }; | |
| 81 | |
| 82 static SDL_Cursor *init_system_cursor(const char *image[]) | |
| 83 { | |
| 84 int i, row, col; | |
| 85 Uint8 data[4*32]; | |
| 86 Uint8 mask[4*32]; | |
| 87 int hot_x, hot_y; | |
| 88 | |
| 89 i = -1; | |
| 90 for ( row=0; row<32; ++row ) { | |
| 91 for ( col=0; col<32; ++col ) { | |
| 92 if ( col % 8 ) { | |
| 93 data[i] <<= 1; | |
| 94 mask[i] <<= 1; | |
| 95 } else { | |
| 96 ++i; | |
| 97 data[i] = mask[i] = 0; | |
| 98 } | |
| 99 switch (image[4+row][col]) { | |
| 100 case \&'X\&': | |
| 101 data[i] |= 0x01; | |
| 102 k[i] |= 0x01; | |
| 103 break; | |
| 104 case \&'\&.\&': | |
| 105 mask[i] |= 0x01; | |
| 106 break; | |
| 107 case \&' \&': | |
| 108 break; | |
| 109 } | |
| 110 } | |
| 111 } | |
| 112 sscanf(image[4+row], "%d,%d", &hot_x, &hot_y); | |
| 113 return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y); | |
| 114 }\fR | |
| 115 .fi | |
| 116 .PP | |
| 117 .SH "SEE ALSO" | |
| 118 .PP | |
| 119 \fI\fBSDL_FreeCursor\fP\fR, \fI\fBSDL_SetCursor\fP\fR, \fI\fBSDL_ShowCursor\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
120 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |