If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome. Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question. Let's work to help developers, not make them feel stupid. Related Questions. Unable to read registry value. Reading the registry. Registry read and write. Read and write Windows registry. Reading registry with windows service.
Windows 7 Registry Problem. Layout: fixed fluid. Web01 2. Strip HTML. Encode HTML. In this case, the contents of the lpData buffer are undefined. This enables an application to determine the best way to allocate a buffer for the value's data. This is because the size of the performance data can change from one call to the next. In this case, you must increase the buffer size and call RegQueryValueEx again passing the updated buffer size in the lpcbData parameter. Repeat this until the function succeeds.
You need to maintain a separate variable to keep track of the buffer size, because the value returned by lpcbData is unpredictable. If the function fails, the return value is a system error code. One way an application can ensure that the string is properly terminated is to use RegGetValue , which adds terminating null characters if needed. Do not be surprised; this is normal behavior.
When calling the RegQueryValueEx function, you should always expect to walk the returned data structure to look for the requested object. Note that operations that access certain registry keys are redirected.
For more information, see Registry Virtualization and bit and bit Application Data in the Registry. Ensure that you reinitialize the value pointed to by the lpcbData parameter each time you call this function. This is very important when you call this function in a loop, as in the following code example.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 11 years, 9 months ago. Active 11 years, 7 months ago. Viewed 4k times. Please provide your valuable inputs on this. Thanks in advance. Improve this question. Jon Seigel Fails how? What return value do you get?
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