Handling Critical Errors in Windows-Based Application |
Q69027
The information in this article applies to:
- Microsoft Windows Software Development Kit (SDK) versions 3.0, 3.1
SUMMARY
The Windows SetErrorMode() function controls whether Windows handles MS-DOS Function 24H errors or allows the calling application to handle them. Listed below is an example of an MS-DOS Function 24H error and Windows's method for handling the error: if an application attempts to access drive A and there is no disk in that drive, Windows displays the System Error message box "Cannot read from drive A: (Cancel) (Retry)."
Calling SetErrorMode() allows the application to handle these messages rather than defaulting to the System Error message box.
The following code fragment demonstrates this process:
SetErrorMode(1); // Allow application to handle system error
...
/* If error occurs, handle it appropriately. */
...
SetErrorMode(0); // Windows will display the standard
// INT 24H error message box for any other
// System Errors.
Additional query words:
Keywords : _IK
Issue type : kbhowto
Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK300 kbWinSDK310
Last Reviewed: November 6, 1999 |
