c:graphics.h:restorecrtmode
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c:graphics.h:restorecrtmode [2015/05/06 23:06] |
c:graphics.h:restorecrtmode [2024/02/16 01:05] (current) |
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| + | ===== restorecrtmode ===== | ||
| + | |||
| + | |||
| + | ====Syntax of restorecrtmode ==== | ||
| + | <code c> | ||
| + | #include <graphics.h> | ||
| + | void restorecrtmode(void); | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Description of restorecrtmode ==== | ||
| + | <code c> | ||
| + | restorecrtmode restores the original video mode detected by initgraph. | ||
| + | This function can be used in conjunction with setgraphmode to switch back | ||
| + | and forth between text and graphics modes. textmode should not be used | ||
| + | for this purpose; use it only when the screen is in text mode, to change | ||
| + | to a different text mode. | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Example of restorecrtmode ==== | ||
| + | <code c> | ||
| + | /* restorecrtmode example */ | ||
| + | |||
| + | #include <graphics.h> | ||
| + | #include <stdlib.h> | ||
| + | #include <stdio.h> | ||
| + | #include <conio.h> | ||
| + | |||
| + | int main(void) | ||
| + | { | ||
| + | /* request autodetection */ | ||
| + | int gdriver = DETECT, gmode, errorcode; | ||
| + | int x, y; | ||
| + | |||
| + | /* 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 */ | ||
| + | } | ||
| + | |||
| + | x = getmaxx() / 2; | ||
| + | y = getmaxy() / 2; | ||
| + | |||
| + | /* output a message */ | ||
| + | settextjustify(CENTER_TEXT, CENTER_TEXT); | ||
| + | outtextxy(x, y, "Press any key to exit graphics:"); | ||
| + | getch(); | ||
| + | |||
| + | /* restore system to text mode */ | ||
| + | restorecrtmode(); | ||
| + | printf("We're now in text mode.\n"); | ||
| + | printf("Press any key to return to graphics mode:"); | ||
| + | getch(); | ||
| + | |||
| + | /* return to graphics mode */ | ||
| + | |||
| + | setgraphmode(getgraphmode()); | ||
| + | |||
| + | /* output a message */ | ||
| + | settextjustify(CENTER_TEXT, CENTER_TEXT); | ||
| + | outtextxy(x, y, "We're back in graphics mode."); | ||
| + | outtextxy(x, y+textheight("W"), "Press any key to halt:"); | ||
| + | |||
| + | /* clean up */ | ||
| + | getch(); | ||
| + | closegraph(); | ||
| + | return 0; | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== See also ==== | ||
| + | [[getgraphmode]] | ||
| + | [[initgraph]] | ||
| + | [[setgraphmode]] | ||
| + | |||
| + | |||
| + | ===== output of restorecrtmode example ===== | ||
| + | |||
| + | no output of example at the moment | ||
| + | do not hesitate and add it... | ||
| + | |||
| + | |||
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