用nano-X 畫個視窗，黑的徹底 " -"

 #include "nano-X.h"

 #include "nxcolors.h"

int main(int ac,char **av)

{

GR_WINDOW_ID w;

GR_EVENT event;

if (GrOpen() < 0)

 {

printf("Can’t open graphics/n");

exit(0);

}

w = GrNewWindow(GR_ROOT_WINDOW_ID, 20, 20, 640, 480, 4, GR_COLOR_BLACK, GR_COLOR_BLUE);

GrMapWindow(w);

for (;;) { GrGetNextEvent(&event); }

GrClose();

return 0;

}