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1 <HTML
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2 ><HEAD
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3 ><TITLE
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4 >SDL_CreateCursor</TITLE
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5 ><META
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6 NAME="GENERATOR"
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.61
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8 "><LINK
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9 REL="HOME"
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10 TITLE="SDL Library Documentation"
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11 HREF="index.html"><LINK
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12 REL="UP"
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13 TITLE="Video"
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14 HREF="video.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="SDL_WarpMouse"
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17 HREF="sdlwarpmouse.html"><LINK
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18 REL="NEXT"
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19 TITLE="SDL_FreeCursor"
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20 HREF="sdlfreecursor.html"></HEAD
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21 ><BODY
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22 CLASS="REFENTRY"
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23 BGCOLOR="#FFF8DC"
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24 TEXT="#000000"
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25 LINK="#0000ee"
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26 VLINK="#551a8b"
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27 ALINK="#ff0000"
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28 ><DIV
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29 CLASS="NAVHEADER"
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30 ><TABLE
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31 WIDTH="100%"
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32 BORDER="0"
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33 CELLPADDING="0"
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34 CELLSPACING="0"
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35 ><TR
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36 ><TH
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37 COLSPAN="3"
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38 ALIGN="center"
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39 >SDL Library Documentation</TH
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40 ></TR
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41 ><TR
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42 ><TD
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43 WIDTH="10%"
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44 ALIGN="left"
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45 VALIGN="bottom"
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46 ><A
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47 HREF="sdlwarpmouse.html"
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48 >Prev</A
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49 ></TD
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50 ><TD
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51 WIDTH="80%"
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52 ALIGN="center"
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53 VALIGN="bottom"
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54 ></TD
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55 ><TD
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56 WIDTH="10%"
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57 ALIGN="right"
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58 VALIGN="bottom"
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59 ><A
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60 HREF="sdlfreecursor.html"
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61 >Next</A
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62 ></TD
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63 ></TR
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64 ></TABLE
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65 ><HR
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66 ALIGN="LEFT"
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67 WIDTH="100%"></DIV
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68 ><H1
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69 ><A
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70 NAME="SDLCREATECURSOR"
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71 >SDL_CreateCursor</A
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72 ></H1
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73 ><DIV
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74 CLASS="REFNAMEDIV"
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75 ><A
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76 NAME="AEN1989"
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77 ></A
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78 ><H2
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79 >Name</H2
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80 >SDL_CreateCursor -- Creates a new mouse cursor.</DIV
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81 ><DIV
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82 CLASS="REFSYNOPSISDIV"
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83 ><A
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84 NAME="AEN1992"
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85 ></A
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86 ><H2
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87 >Synopsis</H2
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88 ><DIV
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89 CLASS="FUNCSYNOPSIS"
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90 ><A
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91 NAME="AEN1993"
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92 ></A
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93 ><P
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94 ></P
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95 ><PRE
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96 CLASS="FUNCSYNOPSISINFO"
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97 >#include "SDL.h"</PRE
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98 ><P
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99 ><CODE
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100 ><CODE
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101 CLASS="FUNCDEF"
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102 >SDL_Cursor *<B
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103 CLASS="FSFUNC"
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104 >SDL_CreateCursor</B
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105 ></CODE
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106 >(Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);</CODE
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107 ></P
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108 ><P
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109 ></P
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110 ></DIV
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111 ></DIV
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112 ><DIV
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113 CLASS="REFSECT1"
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114 ><A
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115 NAME="AEN1999"
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116 ></A
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117 ><H2
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118 >Description</H2
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119 ><P
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120 >Create a cursor using the specified <TT
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121 CLASS="PARAMETER"
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122 ><I
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123 >data</I
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124 ></TT
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125 > and <TT
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126 CLASS="PARAMETER"
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127 ><I
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128 >mask</I
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129 ></TT
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130 > (in MSB format).
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131 The cursor width must be a multiple of 8 bits.</P
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132 ><P
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133 >The cursor is created in black and white according to the following:
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134 <DIV
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135 CLASS="INFORMALTABLE"
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136 ><A
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137 NAME="AEN2005"
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138 ></A
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139 ><P
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140 ></P
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141 ><TABLE
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142 BORDER="1"
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143 CLASS="CALSTABLE"
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144 ><THEAD
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145 ><TR
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146 ><TH
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147 ALIGN="LEFT"
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148 VALIGN="TOP"
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149 >Data / Mask</TH
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150 ><TH
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151 ALIGN="LEFT"
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152 VALIGN="TOP"
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153 >Resulting pixel on screen</TH
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154 ></TR
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155 ></THEAD
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156 ><TBODY
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157 ><TR
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158 ><TD
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159 ALIGN="LEFT"
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160 VALIGN="TOP"
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161 >0 / 1</TD
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162 ><TD
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163 ALIGN="LEFT"
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164 VALIGN="TOP"
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165 >White</TD
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166 ></TR
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167 ><TR
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168 ><TD
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169 ALIGN="LEFT"
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170 VALIGN="TOP"
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171 >1 / 1</TD
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172 ><TD
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173 ALIGN="LEFT"
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174 VALIGN="TOP"
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175 >Black</TD
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176 ></TR
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177 ><TR
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178 ><TD
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179 ALIGN="LEFT"
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180 VALIGN="TOP"
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181 >0 / 0</TD
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182 ><TD
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183 ALIGN="LEFT"
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184 VALIGN="TOP"
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185 >Transparent</TD
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186 ></TR
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187 ><TR
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188 ><TD
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189 ALIGN="LEFT"
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190 VALIGN="TOP"
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191 >1 / 0</TD
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192 ><TD
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193 ALIGN="LEFT"
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194 VALIGN="TOP"
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195 >Inverted color if possible, black if not.</TD
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196 ></TR
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197 ></TBODY
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198 ></TABLE
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199 ><P
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200 ></P
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201 ></DIV
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202 ></P
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203 ><P
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204 >Cursors created with this function must be freed with
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205 <A
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206 HREF="sdlfreecursor.html"
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207 >SDL_FreeCursor</A
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208 >.</P
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209 ></DIV
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210 ><DIV
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211 CLASS="REFSECT1"
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212 ><A
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213 NAME="AEN2026"
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214 ></A
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215 ><H2
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216 >Example</H2
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217 ><PRE
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218 CLASS="PROGRAMLISTING"
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219 >/* Stolen from the mailing list */
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220 /* Creates a new mouse cursor from an XPM */
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221
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222
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223 /* XPM */
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224 static const char *arrow[] = {
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225 /* width height num_colors chars_per_pixel */
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226 " 32 32 3 1",
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227 /* colors */
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228 "X c #000000",
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229 ". c #ffffff",
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230 " c None",
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231 /* pixels */
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232 "X ",
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233 "XX ",
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234 "X.X ",
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235 "X..X ",
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236 "X...X ",
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237 "X....X ",
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238 "X.....X ",
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239 "X......X ",
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240 "X.......X ",
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241 "X........X ",
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242 "X.....XXXXX ",
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243 "X..X..X ",
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244 "X.X X..X ",
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245 "XX X..X ",
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246 "X X..X ",
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247 " X..X ",
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248 " X..X ",
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249 " X..X ",
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250 " XX ",
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251 " ",
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252 " ",
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253 " ",
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254 " ",
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255 " ",
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256 " ",
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257 " ",
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258 " ",
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259 " ",
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260 " ",
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261 " ",
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262 " ",
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263 " ",
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264 "0,0"
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265 };
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266
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267 static SDL_Cursor *init_system_cursor(const char *image[])
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268 {
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269 int i, row, col;
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270 Uint8 data[4*32];
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271 Uint8 mask[4*32];
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272 int hot_x, hot_y;
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273
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274 i = -1;
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275 for ( row=0; row<32; ++row ) {
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276 for ( col=0; col<32; ++col ) {
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277 if ( col % 8 ) {
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278 data[i] <<= 1;
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279 mask[i] <<= 1;
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280 } else {
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281 ++i;
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282 data[i] = mask[i] = 0;
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283 }
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284 switch (image[4+row][col]) {
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285 case 'X':
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286 data[i] |= 0x01;
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287 k[i] |= 0x01;
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288 break;
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289 case '.':
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290 mask[i] |= 0x01;
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291 break;
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292 case ' ':
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293 break;
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294 }
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295 }
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296 }
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297 sscanf(image[4+row], "%d,%d", &hot_x, &hot_y);
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298 return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
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299 }</PRE
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300 ></DIV
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301 ><DIV
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302 CLASS="REFSECT1"
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303 ><A
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304 NAME="AEN2029"
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305 ></A
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306 ><H2
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307 >See Also</H2
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308 ><P
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309 ><A
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310 HREF="sdlfreecursor.html"
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311 ><TT
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312 CLASS="FUNCTION"
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313 >SDL_FreeCursor</TT
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314 ></A
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315 >,
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316 <A
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317 HREF="sdlsetcursor.html"
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318 ><TT
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319 CLASS="FUNCTION"
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320 >SDL_SetCursor</TT
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321 ></A
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322 >,
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323 <A
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324 HREF="sdlshowcursor.html"
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325 ><TT
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326 CLASS="FUNCTION"
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327 >SDL_ShowCursor</TT
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328 ></A
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329 ></P
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330 ></DIV
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331 ><DIV
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332 CLASS="NAVFOOTER"
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333 ><HR
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334 ALIGN="LEFT"
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335 WIDTH="100%"><TABLE
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336 WIDTH="100%"
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337 BORDER="0"
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338 CELLPADDING="0"
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339 CELLSPACING="0"
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340 ><TR
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341 ><TD
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342 WIDTH="33%"
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343 ALIGN="left"
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344 VALIGN="top"
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345 ><A
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346 HREF="sdlwarpmouse.html"
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347 >Prev</A
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348 ></TD
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349 ><TD
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350 WIDTH="34%"
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351 ALIGN="center"
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352 VALIGN="top"
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353 ><A
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354 HREF="index.html"
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355 >Home</A
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356 ></TD
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357 ><TD
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358 WIDTH="33%"
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359 ALIGN="right"
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360 VALIGN="top"
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361 ><A
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362 HREF="sdlfreecursor.html"
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363 >Next</A
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364 ></TD
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365 ></TR
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366 ><TR
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367 ><TD
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368 WIDTH="33%"
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369 ALIGN="left"
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370 VALIGN="top"
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371 >SDL_WarpMouse</TD
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372 ><TD
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373 WIDTH="34%"
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374 ALIGN="center"
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375 VALIGN="top"
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376 ><A
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377 HREF="video.html"
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378 >Up</A
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379 ></TD
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380 ><TD
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381 WIDTH="33%"
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382 ALIGN="right"
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383 VALIGN="top"
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384 >SDL_FreeCursor</TD
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385 ></TR
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386 ></TABLE
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387 ></DIV
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388 ></BODY
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389 ></HTML
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390 > |
