以下代码在dos/turbo_C2.0编译通过，并使用良好，只是没有注释，
我也忘了，大家根据函数名猜吧。
http://leadgenius.cublog.cn//* gpopup.c */
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include"gpopup.h"
#include"mouse.h"
#define Max(a，b) ((a)>(b)?(a)
b))
#define Min(a，b) ((a)<(b)?(a)b))
windesc *base_win = NULL;
windesc *curr_win = NULL;
int graphdriver = 0;
int graphmode = 0;
char *pathdriver = "";
wincolors defcolors = {
{SOLID_LINE，0，NORM_WIDTH}，
{EMPTY_FILL，0}，
{DEFAULT_FONT，HORIZ_DIR，1，LEFT_TEXT，TOP_TEXT}，
{SOLID_LINE，0，THICK_WIDTH}，
{0，0，0，0，1}，
1，7，7，7，0
};
static windesc *top_win;
static void dispose_window_node(windesc *w);
static windesc *push_window_node(void);
static windesc *make_window_node(void);
static void chg_win(windesc *this);
static void fill_win(windesc *w);
void init_win(void)
{
initgraph(>aphdriver，>aphmode，pathdriver);
base_win = make_window_node();
getviewsettings(&base_win->wc.viewinfo);
base_win->wc.text_color = getcolor();
getfillsettings(&base_win->wc.fillinfo);
getlinesettings(&base_win->wc.lineinfo);
gettextsettings(&base_win->wc.textinfo);
base_win->wc.brdinfo = base_win->wc.lineinfo;
base_win->xsave = getx();
base_win->ysave = gety();
base_win->wtype = tile;
base_win->wc.border_type = 0;
top_win = base_win;
curr_win = base_win;
}
windesc *draw_win(int x，int y，int wd，int ht，char *title，
enum windowtype wt，wincolors *wc)
{
windesc *w;
int maxx，maxy;
w = push_window_node();
maxx = getmaxx();
maxy = getmaxy();
wd = Max(wd，3);
wd = Min(wd，maxx);
ht = Max(ht，3);
ht = Min(ht，maxy);
if(x == Ctrwin) x=(maxx - wd) / 2;
if(y == Ctrwin) y=(maxy - ht) / 2;
x = Max(x，0);
y = Max(y，0);
if((x+wd) > maxx) x = maxx - wd + 1;
if((y+ht) > maxy) y = maxy - ht + 1;
w->wc = *wc ;
w->wd = wd;
w->ht = ht;
w->xul = x;
w->yul = y;
w->xlr = x+w->wd-1;
w->ylr = y+w->ht-1;
w->xsave = 1;
w->ysave = 1;
w->wtype = wt;
w->name = strdup(title);
if(wt == popup) {
w->image = calloc(imagesize(w->xul，w->yul，
w->xlr，w->ylr)，1);
swap_image(w);
}
fill_win(w);
chg_win(w);
return w;
}
static void fill_win(windesc *w)
{
mouse_off(1);
chgviewport(base_win);
setcolor(w->wc.border_color);
setlinestyle(w->wc.brdinfo.linestyle，
w->wc.brdinfo.upattern，
w->wc.brdinfo.thickness);
setfillstyle(Solid_fill，w->wc.back_color);
if(w->wc.border_type&&w->wc.brdinfo.thinkness == Thick_width)
bar3d(w->xul+1，w->yul+1，w->xlr-1，w->ylr-1，0，0);
else
bar3d(w->xul，w->yul，w->xlr，w->ylr，0，0);
chgviewport(curr_win);
mouse_on(1);
}
void clr_win(void )
{
fill_win(curr_win);
}
void view_win(windesc *this，int select)
{
windesc *p;
if(selete && this == top_win) return ;
mouse_off(1);
if(thisf->wtype == popup) {
p = top_win;
while(p != this) {
swap_image(p);
p = p->under;
}
swap_image(this);
p = this;
while (p != top_win) {
p = p->over;
swap_image(p);
}
}
if (this == top_win) {
this->under->over = NULL;
top_win = this->under;
}
else {
this->under->over = this->over;
this->over->under = this->under;
}
if (select) {
top_win->over = this;
this->under = top_win;
top_win = this;
swap_image(this);
chg_win(this);
}
else {
chg_win(top_win);
dispose_window_node(this);
}
mouse_on(1);
}
static void chg_win(windesc *this)
{
curr_win->xsave = getx();
curr_win->ysave = gety();
getfillsettings(&curr_win->wc.fillinfo);
getlinesettings(&curr_win->wc.lineinfo);
gettextsettings(&curr_win->wc.textinfo);
chgviewport(this);
setcolor(this->wc.text_color);
setfillstyle (this->wc.fillinfo.pattern，
this->wc.fillinfo.color);
setlinestyle (this->wc.lineinfo.linestyle，
this->wc.lineinfo.upattern，
this->wc.lineinfo.thickness);
settextjustify(this->wc.textinfo.horiz，
this->wc.textinfo.vert);
settextdtyle (this->wc.textinfo.font，
this->wc.textinfo.dirction，
this->wc.textinfo.charsize);
moveto(this->xsave，this->ysave);
curr_win = this;
}
void chgviewport(windesc *this)
{
int delta;
if(this->wc.border_type)
delta = this->wc.brdinfo.thickness;
else delta = 0;
setviewport(this->xul+delta，this->yul+delta，
this->xlr-delta，this->ylr-delta，
this->wc.viewinfo.clip);
}
void swap_image(windesc *w)
{
char *temp_image;
int nbytes;
if (w->wtype == popup) {
nbytes = imagesize (w->xul，w->yul，w->xlr，w->ylr);
temp_image = malloc(nbytes);
chgviewport (base_win);
mouse_off(1);
getimage(w->xul，w->yul，w->xlr，w->ylr，temp_image);
putimage(w->xul，w->yul，w->image，Copy_put);
mouse_on(1);
chgviewport(w);
memcpy(w->image，temp_image，nbytes);
free(temp_image);
}
}
static windesc *make_window_node(void)
{
/*
Make_window_node allocates room for a new window strctyre，
and initializes it’s link to NULL.
*/
windesc *q;
q = (windesc *)malloc(sizeof(windesc));
q->image = NULL;
q->under = NULL;
q->over = NULL;
return q;
}
static windesc *push_window_node(void)
{
windesc *q;
q = make_window_node();
top_win->over = q;
q->under = top_win;
top_win = q;
return q;
}
static void dispose_window_node(windesc *w)
{
if(w != NULL) {
if (w->wtype == popup) free(w->image);
free(w->name);
free(w);
}
}
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