diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/libsdl-trunk/docs/html/sdlcreatecursor.html --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/libsdl-trunk/docs/html/sdlcreatecursor.html Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,398 @@ +SDL_CreateCursor
SDL Library Documentation
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SDL_CreateCursor

Name

SDL_CreateCursor -- Creates a new mouse cursor.

Synopsis

#include "SDL.h"

SDL_Cursor *SDL_CreateCursor(Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);

Description

Create a cursor using the specified data and mask (in MSB format). +The cursor width must be a multiple of 8 bits.

The cursor is created in black and white according to the following: +

Data / MaskResulting pixel on screen
0 / 1White
1 / 1Black
0 / 0Transparent
1 / 0Inverted color if possible, black if not.

Cursors created with this function must be freed with +SDL_FreeCursor.

Example

/* Stolen from the mailing list */
+/* Creates a new mouse cursor from an XPM */
+
+
+/* XPM */
+static const char *arrow[] = {
+  /* width height num_colors chars_per_pixel */
+  "    32    32        3            1",
+  /* colors */
+  "X c #000000",
+  ". c #ffffff",
+  "  c None",
+  /* pixels */
+  "X                               ",
+  "XX                              ",
+  "X.X                             ",
+  "X..X                            ",
+  "X...X                           ",
+  "X....X                          ",
+  "X.....X                         ",
+  "X......X                        ",
+  "X.......X                       ",
+  "X........X                      ",
+  "X.....XXXXX                     ",
+  "X..X..X                         ",
+  "X.X X..X                        ",
+  "XX  X..X                        ",
+  "X    X..X                       ",
+  "     X..X                       ",
+  "      X..X                      ",
+  "      X..X                      ",
+  "       XX                       ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "                                ",
+  "0,0"
+};
+
+static SDL_Cursor *init_system_cursor(const char *image[])
+{
+  int i, row, col;
+  Uint8 data[4*32];
+  Uint8 mask[4*32];
+  int hot_x, hot_y;
+
+  i = -1;
+  for ( row=0; row<32; ++row ) {
+    for ( col=0; col<32; ++col ) {
+      if ( col % 8 ) {
+        data[i] <<= 1;
+        mask[i] <<= 1;
+      } else {
+        ++i;
+        data[i] = mask[i] = 0;
+      }
+      switch (image[4+row][col]) {
+        case 'X':
+          data[i] |= 0x01;
+          mask[i] |= 0x01;
+          break;
+        case '.':
+          mask[i] |= 0x01;
+          break;
+        case ' ':
+          break;
+      }
+    }
+  }
+  sscanf(image[4+row], "%d,%d", &hot_x, &hot_y);
+  return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
+}

See Also

SDL_FreeCursor, +SDL_SetCursor, +SDL_ShowCursor


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