c:graphics.h:graphdefaults
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| + | ===== graphdefaults ===== | ||
| + | |||
| + | |||
| + | ====Syntax of graphdefaults ==== | ||
| + | <code c> | ||
| + | #include <graphics.h> | ||
| + | void graphdefaults(void); | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Description of graphdefaults ==== | ||
| + | <code c> | ||
| + | graphdefaults resets all graphics settings to their defaults: | ||
| + | * sets the viewport to the entire screen. | ||
| + | * moves the current position to (0,0). | ||
| + | * sets the default palette colors, background color, and drawing | ||
| + | color. | ||
| + | * sets the default fill style and pattern. | ||
| + | * sets the default text font and justification. | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Example of graphdefaults ==== | ||
| + | <code c> | ||
| + | /* graphdefaults example */ | ||
| + | |||
| + | #include <graphics.h> | ||
| + | #include <stdlib.h> | ||
| + | #include <stdio.h> | ||
| + | #include <conio.h> | ||
| + | |||
| + | int main(void) | ||
| + | { | ||
| + | /* request autodetection */ | ||
| + | int gdriver = DETECT, gmode, errorcode; | ||
| + | int maxx, maxy; | ||
| + | |||
| + | /* 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 */ | ||
| + | } | ||
| + | |||
| + | maxx = getmaxx(); | ||
| + | maxy = getmaxy(); | ||
| + | |||
| + | /* output line with nondefault settings */ | ||
| + | setlinestyle(DOTTED_LINE, 0, 3); | ||
| + | line(0, 0, maxx, maxy); | ||
| + | outtextxy(maxx/2, maxy/3, "Before default values are restored."); | ||
| + | getch(); | ||
| + | |||
| + | /* restore default values for everything */ | ||
| + | graphdefaults(); | ||
| + | |||
| + | /* clear the screen */ | ||
| + | cleardevice(); | ||
| + | |||
| + | |||
| + | |||
| + | /* output line with default settings */ | ||
| + | line(0, 0, maxx, maxy); | ||
| + | outtextxy(maxx/2, maxy/3, "After restoring default values."); | ||
| + | |||
| + | /* clean up */ | ||
| + | getch(); | ||
| + | closegraph(); | ||
| + | return 0; | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== See also ==== | ||
| + | [[initgraph]] | ||
| + | [[setgraphmode]] | ||
| + | |||
| + | |||
| + | ===== output of graphdefaults example ===== | ||
| + | |||
| + | no output of example at the moment | ||
| + | do not hesitate and add it... | ||
| + | |||
| + | |||
on the occasion of the current invasion of Russia in Ukraine
c/graphics.h/graphdefaults.txt · Last modified: 2024/02/16 01:05 (external edit)
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