- 1 year ago
SystemParametersInfoForDPI corrupts memory
The function SystemParametersInfoForDPI
is not a standard Windows API function. Instead, it seems to be a typo or a custom function in your code. The correct Windows API function to use for querying or setting system parameters for DPI (Dots Per Inch) is SystemParametersInfoW
(Unicode version) or SystemParametersInfoA
(ANSI version).
If you are experiencing memory corruption when using SystemParametersInfoForDPI
, it's likely because the function is not defined correctly or is being used incorrectly in your code. Here are some possible reasons for the memory corruption issue:
Incorrect Function Signature: Ensure that you are using the correct function signature and calling convention for the
SystemParametersInfoForDPI
function. The correct function signature for the Unicode version is:cBOOL SystemParametersInfoForDPI(
UINT uiAction,
UINT uiParam,
PVOID pvParam,
UINT fWinIni,
UINT dpi
);
The ANSI version uses
SystemParametersInfoA
with a similar signature.Memory Allocation Issues: If you are passing pointers to
pvParam
and not allocating sufficient memory for the function to write its output, it can lead to memory corruption. Make sure to allocate memory appropriately before calling the function.Using the Wrong Action Code: The first parameter
uiAction
specifies the system parameter to query or set. If you are using an incorrect or unsupported action code, it can lead to unexpected behavior and memory corruption.Incorrect Data Types: Ensure that you are using the correct data types for the function parameters. The
PVOID
data type is a generic pointer and should be cast to the appropriate data type based on theuiAction
and the parameter you are working with.Incorrect DPI Value: If you are passing an invalid DPI value, it can cause memory corruption or undefined behavior. Make sure the DPI value is correct and within the valid range.
Buffer Overflow: If you are using a buffer to store the output from the function, make sure it is large enough to hold the data returned by the function. Buffer overflow can lead to memory corruption.
Double-check your code to ensure that you are using the correct function, correct parameters, and that you are handling memory allocation properly. If you are still facing memory corruption issues, consider providing more details about your code or seek help from the community or your development team for further assistance.