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Power-Programmierung
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CD1.mdf
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drdobbs
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1992
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06
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dflt12
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slidebox.c
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1992-04-22
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/* ------------- slidebox.c ------------ */
#include "dflat.h"
static int (*GenericProc)
(WINDOW wnd,MESSAGE msg,PARAM p1,PARAM p2);
static BOOL KeepRunning;
static int SliderLen;
static int Percent;
extern DBOX SliderBoxDB;
static void InsertPercent(char *s)
{
int offset;
char pcc[5];
sprintf(s, "%c%c%c",
CHANGECOLOR,
color[DIALOG][SELECT_COLOR][FG]+0x80,
color[DIALOG][SELECT_COLOR][BG]+0x80);
s += 3;
memset(s, ' ', SliderLen);
*(s+SliderLen) = '\0';
sprintf(pcc, "%d%%", Percent);
strncpy(s+SliderLen/2-1, pcc, strlen(pcc));
offset = (SliderLen * Percent) / 100;
memmove(s+offset+4, s+offset, strlen(s+offset)+1);
sprintf(pcc, "%c%c%c%c",
RESETCOLOR,
CHANGECOLOR,
color[DIALOG][SELECT_COLOR][BG]+0x80,
color[DIALOG][SELECT_COLOR][FG]+0x80);
strncpy(s+offset, pcc, 4);
*(s + strlen(s) - 1) = RESETCOLOR;
}
static int SliderTextProc(
WINDOW wnd,MESSAGE msg,PARAM p1,PARAM p2)
{
switch (msg) {
case PAINT:
Percent = (int)p2;
InsertPercent(GetText(wnd) ?
GetText(wnd) : SliderBoxDB.ctl[1].itext);
GenericProc(wnd, PAINT, 0, 0);
if (Percent >= 100)
SendMessage(GetParent(wnd),COMMAND,ID_CANCEL,0);
if (!dispatch_message())
PostMessage(GetParent(wnd), ENDDIALOG, 0, 0);
return KeepRunning;
default:
break;
}
return GenericProc(wnd, msg, p1, p2);
}
static int SliderBoxProc(
WINDOW wnd, MESSAGE msg, PARAM p1, PARAM p2)
{
int rtn;
WINDOW twnd;
switch (msg) {
case CREATE_WINDOW:
AddAttribute(wnd, SAVESELF);
rtn = DefaultWndProc(wnd, msg, p1, p2);
twnd = SliderBoxDB.ctl[1].wnd;
GenericProc = twnd->wndproc;
twnd->wndproc = SliderTextProc;
KeepRunning = TRUE;
SendMessage(wnd, CAPTURE_MOUSE, 0, 0);
SendMessage(wnd, CAPTURE_KEYBOARD, 0, 0);
return rtn;
case COMMAND:
if ((int)p2 == 0 && (int)p1 == ID_CANCEL) {
if (Percent >= 100 ||
YesNoBox("Terminate process?"))
KeepRunning = FALSE;
else
return TRUE;
}
break;
case CLOSE_WINDOW:
SendMessage(wnd, RELEASE_MOUSE, 0, 0);
SendMessage(wnd, RELEASE_KEYBOARD, 0, 0);
break;
default:
break;
}
return DefaultWndProc(wnd, msg, p1, p2);
}
WINDOW SliderBox(int len, char *ttl, char *msg)
{
SliderLen = len;
SliderBoxDB.dwnd.title = ttl;
SliderBoxDB.dwnd.w =
max(strlen(ttl),max(len, strlen(msg)))+4;
SliderBoxDB.ctl[0].itext = msg;
SliderBoxDB.ctl[0].dwnd.w = strlen(msg);
SliderBoxDB.ctl[0].dwnd.x =
(SliderBoxDB.dwnd.w - strlen(msg)-1) / 2;
SliderBoxDB.ctl[1].itext =
DFrealloc(SliderBoxDB.ctl[1].itext, len+10);
Percent = 0;
InsertPercent(SliderBoxDB.ctl[1].itext);
SliderBoxDB.ctl[1].dwnd.w = len;
SliderBoxDB.ctl[1].dwnd.x = (SliderBoxDB.dwnd.w-len-1)/2;
SliderBoxDB.ctl[2].dwnd.x = (SliderBoxDB.dwnd.w-10)/2;
DialogBox(NULL, &SliderBoxDB, FALSE, SliderBoxProc);
return SliderBoxDB.ctl[1].wnd;
}