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c:graphics.h:getpalettesize [2024/02/16 01:05] (current) |
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+ | ===== getpalettesize ===== | ||
+ | |||
+ | |||
+ | ====Syntax of getpalettesize ==== | ||
+ | <code c> | ||
+ | #include <graphics.h> | ||
+ | int getpalettesize(void); | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== Description of getpalettesize ==== | ||
+ | <code c> | ||
+ | getpalettesize is used to determine how many palette entries can be set | ||
+ | for the current graphics mode. For example, the EGA in color mode returns | ||
+ | 16. | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== Example of getpalettesize ==== | ||
+ | <code c> | ||
+ | /* getpalettesize example */ | ||
+ | |||
+ | #include <graphics.h> | ||
+ | #include <stdlib.h> | ||
+ | #include <stdio.h> | ||
+ | #include <conio.h> | ||
+ | |||
+ | int main() | ||
+ | { | ||
+ | /* request autodetection */ | ||
+ | int gdriver = DETECT, gmode, errorcode; | ||
+ | int midx, midy; | ||
+ | char psize[80]; | ||
+ | |||
+ | /* initialize graphics and local variables */ | ||
+ | initgraph(&gdriver, &gmode, ""); | ||
+ | |||
+ | /* read result of initialization */ | ||
+ | errorcode = graphresult(); | ||
+ | if (errorcode != grOk) { /* an error occurred */ | ||
+ | printf("Graphics error: %s\n", grapherrormsg(errorcode)); | ||
+ | |||
+ | printf("Press any key to halt:"); | ||
+ | getch(); | ||
+ | exit(1); /* terminate with an error code */ | ||
+ | } | ||
+ | |||
+ | midx = getmaxx() / 2; | ||
+ | midy = getmaxy() / 2; | ||
+ | |||
+ | /* convert palette size info into string */ | ||
+ | sprintf(psize, "The palette has %d modifiable entries.",getpalettesize | ||
+ | ()); | ||
+ | |||
+ | /* display the information */ | ||
+ | settextjustify(CENTER_TEXT, CENTER_TEXT); | ||
+ | outtextxy(midx, midy, psize); | ||
+ | |||
+ | /* clean up */ | ||
+ | getch(); | ||
+ | closegraph(); | ||
+ | |||
+ | return 0; | ||
+ | } | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== See also ==== | ||
+ | [[setallpalette]] | ||
+ | [[setpalette]] | ||
+ | |||
+ | |||
+ | ===== output of getpalettesize example ===== | ||
+ | |||
+ | no output of example at the moment | ||
+ | do not hesitate and add it... | ||
+ | |||
+ | |||