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... r Windows 95, and will not happen with non-OLE applications. Borland recommends that all developers running under NT accept any updates to the NT OLE DLLs if and when they are made available by Microsoft. When Win Sight spies on an Object Windows OLE container, it sometimes causes corruption of the container's menus. This behavior is expected.
If it occurs, quit the application and start again. The file DOCOLE ERRS. TXT contains a list of the error codes OLE defines. The list is sorted in numerical order. Refer to it for help in interpreting Many commercial products are now offering their first generation of OLE 2 enabled applications. Some of these applications are more complete OLE implementations than others.
Borland has observed several major commercial applications that exhibit errant behavior when asked to perform certain OLE operations. This is especially true when asked to embed DLL servers, which many OLE applications appear to be unprepared to handle. If you experience problems when using OLE applications you create with TCW in conjunction with third party products, do not jump to the conclusion that the problem is yours. Until OLE applications in the market place mature, it is not yet a safe assumption that just because a product comes from a leading company that it is robust. Changes introduced between OLE 2. 0 and OLE 2. 02 are responsible for exposing some of these problems. When reporting bugs in OLE applications to third parties, be sure to specify that they should be developing and testing under the latest version of OLE.
The 16 bit OLE implementation originally shipped in Windows NT 3. 5 may exhibit problems with DLL servers and may behave differently than the version of OLE that MS recommends for Windows 3. 1. Borland recommends that all NT developers update to later versions of the NT OLE DLLs if and when they are made available by Microsoft. When linking 16 bit OLE 2 modules, the OLE 2 import library (ole 2 w 16. lib) must come before the RTL import library (import. lib. ) The BIVBX 102. DLL has been renamed to BIVBX 11.
DLL. BIVBX 11. DLL has been tested with a large number of VBX controls written to the Microsoft Visual Basic 1. 0 CDK specification. If you have a problem with a specific control, make sure that it does not require VB 2. 0 or VB 3. 0 CDK functionality. VBX 2. 0 and 3. 0 controls will usually display a message saying that they require VB 2. 0 or 3. 0 support. In some cases, though, the control might appear to work but exhibit instability.
Please contact the control vendor and explain the problem. They might have an updated control or might be able to contact Borland to find a solution. The following functions in BIVBX. H are limited to 16 -bit only. To allow for portability to 32 -bits, these functions should be replaced Old (16 -bit only) New (16 -bit and 32 -bit) VBXGetBasicStringPtr VBXGetBasicStringBuf VBXGetCStringPtr VBXGetCStringBuf VBXGetEventName VBXGetEventNameBuf VBXGetPropName VBXGetPropNameBuf VBXLockCString VBXLockCStringBuf Turbo C++ 4. 5 does not support 32 -bit development, but using the more portable names is still a good idea in case you later upgrade to Borland C++ and want to create a 32 -bit application. For more information, see the BIVBX.
WRI file. Target Expert now manages libraries for VBX controls. If you have an IDE project which uses VBX controls, make the following change to your project to take advantage of Target Expert support: - In the project window, delete the bivbx. lib node. - In the project window, right click on your EXE node. - From the resulting Speed Menu, select Target Expert. - In Target Expert, enable the VBX checkbox and press OK. If you choose to install the example programs, TCW places a set of VBX controls in your WINDOWS/SYSTEM directory. The VBX controls are made by Micro Help.
Two of the examples, Turbo MahJongg and Turbo Cribbage, make use of one of the For more information about what controls are included and how to use them, find the Help file called VBT 300. HLP To find out more about using VBX controls generally with Turbo C++, consult the online Help and the Object Windows Programmer's Guide in the Acrobat Reader. See the online Help provided with Open Help (OPENHELP. HLP) for details on how to use and configure this new search engine. If you install TASM with TCW 4. 5, you need to run the Open Help configuration The OWL example called DOCVIEW has a project file called DOCVIEW. IDE.
The project file has a number of different target nodes. The best way to build all the nodes successfully is to use the Project|Build All command. There is a potential danger because many of the products produce intermediate. OBJ files with the same name, but the. OBJs are compiled differently. Using a Make command, one node might end up accidentally using and.
OBJ that was built for When compiling code that contains DDVT functions, do not use run-time type information or you will receive an error message. In order to compile without using run-time type information, compile all code that uses Dvds (for instance OWL 1. 0 x libraries and applications) with the -RT- switch (Options|Project|C++ Options|Exception handling RTTI in the IDE). If your inline assembly code includes an interrupt call, the compiler does not preserve any registers altered by the call. You must write code to save and restore registers when using interrupt calls within inline assembly New Compiler Switches and Linker Optimizations See your documentation for a description of the new compiler switches The Noehxx libraries eliminates the overhead of exception-handling code in the run-time library for users who don't need it and who do rely on any A Noehxx library must be linked in before the standard runtime library. For the IDE, add the appropriate library to the project using Add Node. To ensure the Noehxx library is processed before the standard libraries, turn on "Show Runtime Nodes" in the Options|Environment|Project View dialog.
From the project window you can move the library up and down using the ALt- arrow keys. Be sure the Noehxx library appears before other standard The Noehxx libraries resolve calls to exception-related compiler helper functions to dummy functions that return appropriate return values. They also restore the pre-exception behavior of operator new to return NULL on out of memory conditions. Non-exception enabled versions of setup () and Note: some new features (first introduced in Borland C++ 4. 0) require exception handling. These include the string class, BIDS container classes, the standard OWL libraries, and RTTI. Using the Microsoft DBWIN utility interferes with the Event log's ability to display those same messages.
To see those messages in the Event log, either quit DBWIN or select Options|No Output in DBWIN. DDE applications must be debugged in hard mode. Hard-mode debugging does not work reliably under Windows NT version 3. 1, and might crash the WOW session. The IDE disallows users from selecting hard mode on all stops, but setting a breakpoint on certain Windows messages might cause the debugger to go into hard mode. 16 -bit tools running on NT cannot use NTFS filenames.
Converting TCW 3. 1 Windows Code to TCW 4. 5 To get your TCW++ 3. 1 code to compile and run under TCW 4. 5, modify your code to reflect three character types where compiler errors occur when using the TCW 4. 5 RTL includes. Alternatively, you can set a compiler option and use the RTL includes from TCW 3. 1. The Options | Project | C++ Options | Compatibility | 'Do not read 'char' as distinct type' This option provides for only two character types. Also, use operator new[] () and delete[] () syntax for class arrays. Floating-point formats are a collection of formatting information used to manipulate floating point numbers in certain runtime library functions such This section discusses why you might get the error FLOATING POINT FORMATS NOT LINKED: ABNORMAL PROGRAM TERMINATION and tells There are no current plans to fix this because it is not a bug. The intent is to avoid linking the floating-point formats (about 1 K of overhead) when they are not required.
The tradeoff is that the programmer must explicitly request that the floating-point formats be linked in for some programs that manipulate floats in a limited and Because you can get this error in a number of different ways, check the following list of potential causes to find out how to resolve the error. The causes are listed in order of most common to least common. 1. CAUSE: Floating point set to None . You have your floating point option set to None when it should be set to FIX: Set Floating Point to Fast or Normal. 2. CAUSE: Either the compiler is over-optimizing, or the floating-point formats really do need to be linked in because your program manipulates floats in a limited and specific fashion.
Under certain obscure conditions, the compiler will ignore floating point usage in scanf () (e. g. , trying to read into a float variable that is part of an array contained FIX: Add the following to one source module: #pragma extra float convert 3. CAUSE: Forgetting to put the address operator & on the scanf variable expression. For example, FIX: Change the code so that the & operator is used where it is needed.
For example, the above code should be If you are bringing programs from Borland C++ 4. x into TCW 4. 5: the value of the IDS LISTNUM define in OWL has changed since BC++ 4. 02. If you have created an application in BC++ 4. 0 or 4. 02 using App Expert, you will receive redefinition warnings when rebuilding in TCW 4. 5. To correct this problem, update the. RH file for your project to match the new value for this define. Specifically, the Many changes were made to the compiler in compliance with the latest changes proposed by the ANSI C++ committee.
These include three distinct char types, enhancements to templates, support for virtual functions differing in return types, and other improvements listed here. See the Library Reference and the Programmer's Guide for complete details on these changes and how they affect your wchar t is a fundamental data type in C++ programs. In C programs it continues to be a typedef defined in sudden. h.
See online Help. Enum operator overloading is also supported. The runtime library now supports the ANSI C++ string class. If you already have a string class, it must be renamed for Turbo C++ 4. 5.
In addition, operator new and operator new[] now throw an exception (x alloc), as specified by the ANSI C++ committee. To get the old behavior, you can issue set new handler (0). (set new handler (0), however, does not work with Object Windows or string classes. ) See Chapter 3 of the Programmer's Guide. Arrays are now being allocated through operator new[] () and deleted by operator delete[] (). An example is provided in Chapter 3 of the Turbo C++ 4. 5 implements ANSI C++ runtime type identification (RTTI).
See the Library Reference, "C++ runtime support", for a description of class Type info. RTTI and operator type () are fully described in Chapter 3 of the Programmer's Guide. Turbo C++ provides a full implementation of exception handling under C++ and C. C exceptions can be handled in C or C++ code; C++ exceptions can be handled only in C++ code. The C++ exceptions are described in the Library Reference, "C++ run-time support. " See Chapter 4 of the Programmer's Guide for a full description of how to use exception Turbo C++ 4. 5 also implements the accepted ANSI C++ new style casts.
See the Chapter 3 of the Programmer's Guide for information and Bibliography:
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Research essay sample on Floating Point Character Types
