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PsL Monthly 1993 December
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PSL Monthly Shareware CD-ROM (December 1993).iso
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prgmming
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c
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progbar.exe
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READREZ.CPP
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C/C++ Source or Header
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1992-10-12
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6KB
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241 lines
/*---------------------------------------------------------*/
/* Reads a previously streamed TProgressBar Resource */
/*---------------------------------------------------------*/
#define Uses_TObject
#define Uses_TKeys
#define Uses_TApplication
#define Uses_TEvent
#define Uses_TRect
#define Uses_TDialog
#define Uses_TStaticText
#define Uses_TButton
#define Uses_TMenu
#define Uses_TMenuBar
#define Uses_TSubMenu
#define Uses_TMenuItem
#define Uses_TStatusLine
#define Uses_TStatusItem
#define Uses_TStatusDef
#define Uses_TDeskTop
#define Uses_MsgBox
#define Uses_TStreamableClass
#define Uses_TResourceCollection
#define Uses_TResourceFile
#define Uses_fpstream
#include <tv.h>
#include "tprogbar.h"
__link(RWindow);
__link(RGroup);
__link(RDialog);
__link(RFrame);
__link(RResourceCollection);
__link(RButton);
__link(RCluster);
__link(RProgressBar);
#include <string.h>
#include <stdlib.h>
const char rezFileName[] = "MY.REZ";
const cmAboutCmd = 100; // User selected menu item 'About'
const cmStatusCmd = 101; // User selected menu item 'Progress Bar'
//========================================================================
class TMyApplication : public TApplication
{
public:
TMyApplication();
static TMenuBar *initMenuBar(TRect);
void handleEvent(TEvent &);
private:
void aboutDlg();
void statusDlg();
Boolean isCancel(TDialog *pd);
};
//========================================================================
TMyApplication::TMyApplication() :
TProgInit(&TApplication::initStatusLine,&TMyApplication::initMenuBar,
&TApplication::initDeskTop)
{
}
//========================================================================
TMenuBar *TMyApplication::initMenuBar(TRect bounds)
{
bounds.b.y = bounds.a.y + 1;
return(new TMenuBar(bounds,
new TMenu(
*new TMenuItem("~A~bout",cmAboutCmd,kbAltA,hcNoContext,0,
new TMenuItem("~P~rogress Bar",cmStatusCmd,kbAltL,hcNoContext,0)))));
}
//========================================================================
void TMyApplication::handleEvent(TEvent &event)
{
TApplication::handleEvent(event);
if (event.what == evCommand)
{
switch (event.message.command)
{
case cmAboutCmd:
{
aboutDlg();
clearEvent(event);
break;
}
case cmStatusCmd:
{
statusDlg();
clearEvent(event);
break;
}
}
}
}
//========================================================================
void TMyApplication::aboutDlg()
{
TDialog *pd = new TDialog(TRect(0,0,35,12),"About");
if (pd)
{
pd->options |= ofCentered;
pd->insert(new TStaticText(TRect(1,2,34,7),
"\003Turbo Vision Example\n\003\n"
"\003Streaming a Progress Bar\n\003\n"));
pd->insert(new TButton(TRect(3,9,32,11),"~O~k",cmOK,bfDefault));
if (validView(pd) != 0)
{
deskTop->execView(pd);
destroy(pd);
}
}
}
//========================================================================
Boolean TMyApplication::isCancel(TDialog *pd)
{
TEvent event;
pd->getEvent(event);
pd->handleEvent(event);
if(event.what==evCommand && event.message.command==cmCancel)
return (messageBox("Are you sure you want to Cancel",mfConfirmation|mfYesButton|mfNoButton)==cmYes ? True : False);
else
return False;
}
void TMyApplication::statusDlg()
{
// Read a progress bar from a stream.
TProgressBar *pbar;
TDialog *pd;
fpstream *ofps=0;
ofps = new fpstream( rezFileName, ios::in|ios::binary );
if( !ofps->good() )
messageBox("Stream open error", mfError|mfOKButton );
TResourceFile *myRez;
myRez = new TResourceFile( ofps );
if( !myRez )
messageBox("Resource file error", mfError|mfOKButton );
else
pbar = (TProgressBar*)myRez->get("theProgressBar");
if( !pbar )// if "getting" resource failed...
messageBox("Get resource error", mfError|mfOKButton );
else {
// Create the dialog box.
pd = (TDialog*)myRez->get("theDialogBox");
pd->insert(pbar);
TProgram::deskTop->insert(pd); // Modeless !!!!
int i=0;
Boolean keepOnGoing=True;
TRect r(5,5,pd->size.x-5,pd->size.y-5);
TStaticText *theMessage;
// The first 3rd.
theMessage = new TStaticText( r,
"This is a MODELESS dialog box. You can drag this box around the desktop." );
pd->insert(theMessage);
for(;i<=100;i++) {
pbar->update(i);
idle();
if(isCancel(pd)) {
keepOnGoing=False;
break;
}
delay(50);
}
destroy(theMessage);
if(keepOnGoing) {
// The second 3rd
theMessage = new TStaticText( r,
"Notice that only the attribute is changed to show progress" );
pd->insert(theMessage);
for(;i<=200;i++) {
pbar->update(i);
idle();
if(isCancel(pd)) {
keepOnGoing=False;
break;
}
delay(50);
}
destroy(theMessage);
}
if(keepOnGoing) {
// The last 3rd
theMessage = new TStaticText( r,
"Syntax: TProgressBar(TRect &r, double total, char bar);" );
pd->insert(theMessage);
for(;i<=300;i++) {
pbar->update(i);
idle();
if(isCancel(pd)) {
keepOnGoing=False;
break;
}
delay(50);
}
destroy(theMessage); // not necessary since we destroy
// the TDialog also
}
destroy(pd);
}
}
//========================================================================
int main(void)
{
TMyApplication myApplication;
myApplication.run();
return 0;
}