c:graphics.h:getmaxy
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c:graphics.h:getmaxy [2015/05/06 23:06] |
c:graphics.h:getmaxy [2024/02/16 01:05] (current) |
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| + | ===== getmaxy ===== | ||
| + | |||
| + | |||
| + | ====Syntax of getmaxy ==== | ||
| + | <code c> | ||
| + | #include <graphics.h> | ||
| + | int getmaxy(void); | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Description of getmaxy ==== | ||
| + | <code c> | ||
| + | getmaxy returns the maximum (screen-relative) y value for the current | ||
| + | graphics driver and mode. | ||
| + | For example, on a CGA in 320*200 mode, getmaxy returns 199. getmaxy is | ||
| + | invaluable for centering, determining the boundaries of a region | ||
| + | onscreen, and so on. | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Example of getmaxy ==== | ||
| + | <code c> | ||
| + | /* getmaxy example */ | ||
| + | |||
| + | #include <graphics.h> | ||
| + | #include <stdlib.h> | ||
| + | #include <stdio.h> | ||
| + | #include <conio.h> | ||
| + | |||
| + | int main(void) | ||
| + | { | ||
| + | /* request autodetection */ | ||
| + | int gdriver = DETECT, gmode, errorcode; | ||
| + | int midx, midy; | ||
| + | char xrange[80], yrange[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 max resolution values into strings */ | ||
| + | sprintf(xrange, "X values range from 0..%d", getmaxx()); | ||
| + | sprintf(yrange, "Y values range from 0..%d", getmaxy()); | ||
| + | |||
| + | /* display the information */ | ||
| + | settextjustify(CENTER_TEXT, CENTER_TEXT); | ||
| + | outtextxy(midx, midy, xrange); | ||
| + | outtextxy(midx, midy+textheight("W"), yrange); | ||
| + | |||
| + | |||
| + | /* clean up */ | ||
| + | getch(); | ||
| + | closegraph(); | ||
| + | return 0; | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== See also ==== | ||
| + | [[getmaxx]] | ||
| + | [[getwindowheight]] | ||
| + | [[gety]] | ||
| + | |||
| + | |||
| + | ===== output of getmaxy example ===== | ||
| + | |||
| + | no output of example at the moment | ||
| + | do not hesitate and add it... | ||
| + | |||
| + | |||
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