INFO: Visual C++ 5.0 Readme, Sample Program Issues

• Microsoft Visual C++, 32-bit Editions, version 5.0

SUMMARY

Sample Program Issues

New Visual C++ 5.0 Samples Updated Samples ATL Samples COMMAP, CONNECT, and DRAWSERV Do Not Register Correctly When Path Contains Spaces CUSTOMWZ Sample Missing Files Get Sendtime and Settime Samples from the Compact Disc ATL CIRC Sample Fails in Some Containers ATLCON Sample Fails Under MinCRT Configurations ATLBUTTON Sample Returns Incorrect Property Values ATL POLYGON Sample Does Not Build in Release Mode Link Error in Debug Build of COM Sample acdual/mfcctrl Typo in tan and tanh Sample BINDENRL Sample Fails to Copy STDREG32.MDB Access Violation in Visual Basic 5 When Running COMEXCEL Sample Running OLE SDK Samples Running InOLE2 SDK Samples

MORE INFORMATION

The samples on the first Visual C++ CD are accessible from any directory browser (Windows Explorer or File Manager, for example). Sample code remains available for viewing and download from sample abstracts in the documentation.

New Visual C++ 5.0 Samples

Try out the samples located in the \DEVSTUDIO\VC\SAMPLES directory of the first Visual C++ CD. These include examples of using the new compiler support for COM and samples for ATL. They also include a new Custom AppWizard sample.

Updated Samples

The most recent versions of the following samples are in the DevStudio\Vc\Samples directory on the disc that includes "Microsoft Visual C++" on the label. (Disc 1 if you purchased Visual C++; Disc 3 if you purchased Visual Studio.) Do not use the versions that you can find in the InfoViewer's Samples abstracts. Instead, copy the files from the Microsoft Visual C++ disc to your hard drive.

MFC Samples

• OLDBARS
• SUPERPAD
• OLEVIEW
• WORDPAD
• EXTBIND
• MDIBIND
• BINDENRL
• REGSVR
• SMILEY
• DAOCTL
• ODBCINFO

• CIRC
• POLYGON

• SENDTIME
• SETTIME

• ALLINONE
• INPROC
• LABRADOR

• AXSCRIPT
• URLPAD

These ATL samples do not register correctly when their path contains spaces.

Workaround

Edit their corresponding .RGS files and add single quotes around all occurrences of %MODULE%. For example, you would change a line containing the following:

   InprocServer32 = s %MODULE%

   InprocServer32 = s '%MODULE%'

CUSTOMWZ Sample Missing Files

The CUSTOMWZ sample in the DevStudio\Vc\Samples\appwiz\ directory is missing some essential files.

To obtain the entire sample, with all of its files, install it from the "CUSTOMWZ: A Custom AppWizard" topic in the online documentation. To find this topic, choose the Search command from the Help menu, enter the comma- delimited string, "CUSTOMWZ: A Custom AppWizard", on the Query tab, and then click the Query button.

Get Sendtime and Settime Samples From the Compact Disc

The files for the Sendtime and Settime samples downloaded from the Enterprise sample abstracts in the online documentation will not compile.

Workaround

Manually copy the correct files for these samples from the DevStudio\VC\Samples\Ent\time directory. This directory is on the disc that includes "Microsoft Visual C++" on the label. (Disc 1 if you purchased Visual C++; Disc 3 if you purchased Visual Studio.)

ATL CIRC Sample Fails in Some Containers

For correct functionality in certain containers, objects passing properties must support the propputref semantics. The CIRC sample as installed from the online abstract supports propput instead of propputref. Therefore, you should use the CIRC sample from the DevStudio\Vc\Samples\Atl\circ directory. To see the correct propputref syntax, look in the Circ.idl file. This directory is on the disc that includes "Microsoft Visual C++" on the label. (Disc 1 if you purchased Visual C++; Disc 3 if you purchased Visual Studio.)

ATLCON Sample Fails Under MinCRT Configurations

To successfully run the ATL sample, ATLCON, under a MinCRT configuration, you must remove the WinMain entry point as follows:

1. On the Projects menu, click Settings.

   configurations.

ATLBUTTON Sample Returns Incorrect Property Values

The ATLBUTTON sample returns incorrect values for the properties ImageHover and ImagePush. To correct the sample change the file AtlButton.h so that the function get_ImageHover uses m_bstrFilename[1].Copy() and change get_ImagePush so that it uses m_bstrFilename[2].Copy().

ATL POLYGON Sample Does Not Build in Release Mode

If you copy the ATL POLYGON sample from the online documentation, it will not build in Release mode as it incorrectly defines the _ATL_MIN_CRT macro. The sample on the disc does not have this problem. (Disc 1 if you purchased Visual C++; Disc 3 if you purchased Visual Studio.)

Workaround

1. Select the Settings command from the Project menu

   the Preprocessor definitions edit box. 3.Choose the Link tab. In the
   Output Category, remove DllMain from the Entry-point symbol edit box.

Link Error in Debug Build of COM Sample acdual/mfcctrl

This sample will fail under debug builds looking for comsuppd.lib. To fix the problem, go into the Project Settings dialog box and remove _COM_DEBUG from the Preprocessor definitions box in the C/C++ Preprocessor section.

Typo in tan and tanh Sample

In the documentation of tan and tanh, there is a typo in the sample. The current sample shows:

   printf( "tan( %f ) = %f\n", x, y );
   printf( "tanh( %f ) = %f\n", y, x );

   printf( "tan( %f ) = %f\n", pi/4, x );
   printf( "tanh( %f ) = %f\n", x, y );

   tan( 0.785398 ) =  1.000000
   tanh( 1.000000 ) = 0.761594

BINDENRL Sample Fails to Copy STDREG32.MDB

To build the BINDENRL sample, you'll need to manually copy the database file stdreg32.mdb into the same local directory that you copy the samples source files. You will find stdreg32.mdb in the DEVSTUDIO\VC\Samples\mcl\mfc\database\daoenrol directory. This directory is on the disc that includes "Microsoft Visual C++" on the label. (Disc 1 if you purchased Visual C++; Disc 3 if you purchased Visual Studio.)

Access Violation in Visual Basic 5.0 When Running COMEXCEL Sample

If you get an access violation while running the COMEXCEL sample in Visual Basic 5.0 under Windows NT V4.0, please install the Windows NT Service Pack 2.

Running OLE SDK Samples

Before you run an OLE SDK sample, you should first copy the following subdirectories from the first VC++ product CD

   DevStudio\VC\Samples\SDK\ole\include
   DevStudio\VC\Samples\SDK\ole\lib

   c:\samples\ole\include
   c:\samples\ole\lib

Running InOLE2 SDK Samples

Before you run an InOLE2 SDK sample, you should first copy the following subdirectories from the first VC++ product CD

   DevStudio\VC\Samples\SDK\ole\inole2\inc
   DevStudio\VC\Samples\SDK\ole\inole2\lib

   c:\samples\ole\inole2\inc
   c:\samples\ole\inole2\lib