VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, [5], 6, 7, 8, 9, 10 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 17:15:31 06/07/02 Fri
Author: Chuck Latham
Subject: Clear Graphic Image

I am trying to implement a program using Borland C++Builder 6 and 2 Envision Image Library controls (Version 2, beta 1) to display tiff files. I execute the following code when I get new images to display. The first set of images display with no problem but I am unable to clear the images to display the subsequent images. Can you please tell me what I am doing wrong…

I've tried Clear().
I've disabled and enabled the control.
I've loaded the information into a new TImageScrollBox and assigned its graphic to the control.
I have set graphic and DisplayedGraphic to NULL.

Nothing I have done will allow me to change the original image. After I have done the load from file, I still have the original image displayed.

Best regards,

Chuck Latham
clatham@revealsystems.com

AnsiString filepath = ExtractFilePath(Application->ExeName);
if (FileExists(filepath + "Front.tif"))
{
ISBFront->Graphic->Clear();
ISBFront->Redraw(true);
AnsiString fn = filepath + "Front.tif";
ISBFront->LoadFromFile(fn, 0);
ISBFront->Redraw(true);
DeleteFile(filepath + "Front.tif");
CheckImageAvailable = true;
ISBFront->Visible = true;
}
else
{
ISBFront->Visible = false;
FileCheckRetry++;
if (FileCheckRetry < 20)
fileTimer->Enabled = true;
}
if (FileExists(filepath + "Back.tif"))
{
ISBBack->Graphic->Clear();
ISBFront->Redraw(true);
AnsiString fn = filepath + "Back.tif";
ISBBack->LoadFromFile(fn, 0);
ISBBack->Redraw(true);
ISBBack->Visible = true;
DeleteFile(filepath + "Back.tif");
}
else
{
ISBBack->Visible = false;
}

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.