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c:graphics.h:getbkcolor [2024/02/16 01:05] (current) |
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+ | ===== getbkcolor ===== | ||
+ | |||
+ | |||
+ | ====Syntax of getbkcolor ==== | ||
+ | <code c> | ||
+ | #include <graphics.h> | ||
+ | int getbkcolor(void); | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== Description of getbkcolor ==== | ||
+ | <code c> | ||
+ | getbkcolor returns the current background color. (See the table in | ||
+ | setbkcolor for details.) | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== Example of getbkcolor ==== | ||
+ | <code c> | ||
+ | /* getbkcolor example */ | ||
+ | |||
+ | #include <graphics.h> | ||
+ | #include <stdlib.h> | ||
+ | #include <string.h> | ||
+ | #include <stdio.h> | ||
+ | #include <conio.h> | ||
+ | |||
+ | int main(void) | ||
+ | { | ||
+ | /* request autodetection */ | ||
+ | int gdriver = DETECT, gmode, errorcode; | ||
+ | int bkcolor, midx, midy; | ||
+ | char bkname[35]; | ||
+ | |||
+ | /* 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; | ||
+ | setcolor(getmaxcolor()); | ||
+ | |||
+ | /* for centering text on the display */ | ||
+ | settextjustify(CENTER_TEXT, CENTER_TEXT); | ||
+ | |||
+ | /* get the current background color */ | ||
+ | bkcolor = getbkcolor(); | ||
+ | |||
+ | /* convert color value into a string */ | ||
+ | itoa(bkcolor, bkname, 10); | ||
+ | strcat(bkname, " is the current background color."); | ||
+ | |||
+ | |||
+ | |||
+ | /* display a message */ | ||
+ | outtextxy(midx, midy, bkname); | ||
+ | |||
+ | /* clean up */ | ||
+ | getch(); | ||
+ | closegraph(); | ||
+ | return 0; | ||
+ | } | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== See also ==== | ||
+ | [[getcolor]] | ||
+ | [[getmaxcolor]] | ||
+ | [[getpalette]] | ||
+ | [[setbkcolor]] | ||
+ | |||
+ | |||
+ | ===== output of getbkcolor example ===== | ||
+ | |||
+ | no output of example at the moment | ||
+ | do not hesitate and add it... | ||
+ | |||
+ | |||