用 法: void far getlinesettings(struct linesettingstype far *lininfo): 程序例: #include #include #include #include /* the names of the line styles supported */ char *lname = { "SOLID_LINE", "DOTTED_LINE", "CENTER_LINE", "DASHED_LINE", "USERBIT_LINE" }; int main(void) { /* request auto detection */ int gdriver = DETECT, gmode, errorcode; struct linesettingstype lineinfo; int midx, midy; char lstyle, lpattern, lwidth; /* 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; /* get information about current line settings */ getlinesettings(&lineinfo); /* convert line information into strings */ sprintf(lstyle, "%s is the line style.", lname); sprintf(lpattern, "0x%X is the user-defined line pattern.", lineinfo.upattern); sprintf(lwidth, "%d is the line thickness.", lineinfo.thickness); /* display the information */ settextjustify(CENTER_TEXT, CENTER_TEXT); outtextxy(midx, midy, lstyle); outtextxy(midx, midy+2*textheight("W"), lpattern); outtextxy(midx, midy+4*textheight("W"), lwidth); /* clean up */ getch(); closegraph(); return 0; }