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ScOe
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 Posted: Tue Jul 20, 2004 10:43 am Post subject: deriving from TPropertyEditor |
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I have problem writing my property editor derived class. I get error that
compiler could not find a match for 'TPropertyEditor::TPropertyEditor ()'
I saw same class struct in 'Example: Property editor class'
My code:
class PACKAGE aSetFieldPropEditor: public TPropertyEditor
{
public:
__fastcall aSetFieldPropEditor(void) : Dsgnintf::TPropertyEditor() {};
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Todd Brylski
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| Posted: Tue Jul 20, 2004 5:02 pm Post subject: Re: deriving from TPropertyEditor |
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The Compiler is telling you correctly, there is no TPropertyEditor
constructor that takes no paramaters. This is the only constructor defined:
__fastcall TPropertyEditor(const _di_IFormDesigner ADesigner, int APropCount);
This is in the help file. You need to use the help in order to make your
programs correct. This is the way to use it:
__fastcall aSetFieldPropEditor::aSetFieldPropEditor(const _di_IFormDesigner ADesigner, int APropCount)
: TPropertyEditor( ADesigner, APropCount )
{
}
Todd
"ScOe" <cbinders (AT) hotmail (DOT) com> wrote
| Quote: | I have problem writing my property editor derived class. I get error that
compiler could not find a match for 'TPropertyEditor::TPropertyEditor ()'
I saw same class struct in 'Example: Property editor class'
My code:
class PACKAGE aSetFieldPropEditor: public TPropertyEditor
{
public:
__fastcall aSetFieldPropEditor(void) : Dsgnintf::TPropertyEditor() {};
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Remy Lebeau (TeamB)
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| Posted: Tue Jul 20, 2004 6:57 pm Post subject: Re: deriving from TPropertyEditor |
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"ScOe" <cbinders (AT) hotmail (DOT) com> wrote
| Quote: | I have problem writing my property editor derived class.
I get error that compiler could not find a match for
'TPropertyEditor::TPropertyEditor ()'
|
Which version of BCB are you actually using? TPropertyEditor's constructor
signature changes from one version to another. If you want to have a single
source file be compatible with multiple versions, then you have to use
precompiler conditionals to adjust your declarations according to the
version being used. I use the following code in my own property editors:
--- IDECompilerVariables.h ---
#ifndef IDECompilerVariablesH
#define IDECompilerVariablesH
#ifndef __BORLANDC__
#pragma message Unknown CBuilder version
#error Compiling for an unknown CBuilder version!
#endif // __BORLANDC__
// C++ Builder 3
#if ((__BORLANDC__ >= 0x530) && (__BORLANDC__ < 0x540))
#define CBUILDER3
#define VCL3ORABOVE
// C++ Builder 4
#elif ((__BORLANDC__ >= 0x540) && (__BORLANDC__ < 0x550))
#define CBUILDER4
#define VCL3ORABOVE
#define VCL4ORABOVE
// CBuilder 5
#elif ((__BORLANDC__ >= 0x550) && (__BORLANDC__ < 0x560))
#define CBUILDER5
#define VCL3ORABOVE
#define VCL4ORABOVE
#define VCL5ORABOVE
// CBuilder 6
#elif ((__BORLANDC__ >= 0x560) && (__BORLANDC__ < 0x570))
#define CBUILDER6
#define VCL3ORABOVE
#define VCL4ORABOVE
#define VCL5ORABOVE
#define VCL6ORABOVE
// unsupported version
#else
#pragma message CBuilder version: __BORLANDC__
#error Compiling for an unsupported CBuilder version!
#endif
#endif // IDECompilerVariablesH
--- IDEDesigners.h ---
#ifndef IDEDesignersH
#define IDEDesignersH
#include "IDECompilerVariables.h"
// different IDE versions use different class types for editors,
// so using macros so that the source code can be version-independant
#ifdef VCL6ORABOVE
#include
#define FORM_DESIGNER_TYPE _di_IDesigner
#else
#include <DsgnIntf.hpp>
#ifdef VCL4ORABOVE
#define FORM_DESIGNER_TYPE _di_IFormDesigner
#else
#define FORM_DESIGNER_TYPE TFormDesigner*
#endif
#endif
#ifdef CBUILDER3
#define DECLARE_PROPERTY_EDITOR_CONSTRUCTOR(name) __fastcall
name(void)
#define DEFINE_PROPERTY_EDITOR_CONSTRUCTOR(name) __fastcall
name::name(void) : TPropertyEditor()
#else
#define DECLARE_PROPERTY_EDITOR_CONSTRUCTOR(name) __fastcall
name(const FORM_DESIGNER_TYPE ADesigner, int APropCount)
#define DEFINE_PROPERTY_EDITOR_CONSTRUCTOR(name) __fastcall
name::name(const FORM_DESIGNER_TYPE ADesigner, int APropCount) :
TPropertyEditor(ADesigner, APropCount)
#endif
#endif // IDEDesignersH
--- TMyPropertyEditor.h ---
#ifndef TMyPropertyEditorH
#define TMyPropertyEditorH
#include "IDEDesigners.h"
class TMyPropertyEditor : public TPropertyEditor
{
//...
public:
DECLARE_PROPERTY_EDITOR_CONSTRUCTOR(TMyPropertyEditor);
//...
};
#endif // TMyPropertyEditorH
--- TMyPropertyEditor.cpp ---
#include "TMyPropertyEditor.h"
DEFINE_PROPERTY_EDITOR_CONSTRUCTOR(TMyPropertyEditor),
OtherInitializersHere(...)
{
// initialization code here...
}
Gambit
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ScOe
Guest
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| Posted: Tue Jul 20, 2004 9:31 pm Post subject: Re: deriving from TPropertyEditor |
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"Remy Lebeau (TeamB)" <gambit47.no.spam (AT) no (DOT) spam.yahoo.com> wrote
| Quote: |
"ScOe" <cbinders (AT) hotmail (DOT) com> wrote in message
news:40fd063e (AT) newsgroups (DOT) borland.com...
Which version of BCB are you actually using? TPropertyEditor's
constructor
signature changes from one version to another. If you want to have a
single |
BCB5 .. thanx for code
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