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Date Posted: 06:23:19 07/11/01 Wed
Author: Michel
Subject: Re: Pascal to C++ Translation Questions
In reply to: Lewis Aslan 's message, "Pascal to C++ Translation Questions" on 15:53:56 07/09/01 Mon

Hi Lewis,

I am not very experienced with CBBuilder but here is some help.

> OpenDialog->Filter = GraphicFilter(?????)


OpenDialog->Filter = GraphicFilter(__classid(Graphics::TGraphic));

I see in TMainForm.FormCreate() where the BMP, ICO, and WMF files are registered, but how do the other file formats get registered? At some point I will need
to read TIF files using the OpenPictureDialog control. What are the steps I need to take to make my demo program "TIF aware?"

To register the formats supported by Envision, you need to include the appropriate unit in your project. For example, to include tiff support, add the EnTifGr.Pas to your project, with the "Add to Project" operation. Also, the EnReg.Pas file may be included, and the formats registered are defined in the Envision.Inc. See the sample project, EzViewC5.Bpr.

I get compile errors because when this procedure is called, as in Rotate90MenuClick(), the Pascal version uses:
Transform.OnProgress = Self.OnProgress; and C++ is expecting the call to look more like: Transform->OnProgress = OnProgress(Sender,???); and I'm totally
confused by this.

I'm not sure about this one. This means that the progress method must have two parameters, the sender and the PercentProgress. You must manually add a method with this signature on you main form, and then assign it to the OnProgress event handler property.

Best regards,


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