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Specifies the value that is added to or subtracted from the IRangeValueProvider::Value property when a large change is made, such as when the PAGE DOWN key is pressed.
This property is read-only.
Syntax
HRESULT get_LargeChange(
double *pRetVal
);
Parameters
pRetVal
Return value
None
Remarks
The LargeChange property can support Not a Number (NaN) value. When returning a NaN value, the provider should return a quiet (non-signaling) NaN to avoid raising an exception if floating-point exceptions are turned on. The following example shows how to create a quiet NaN:
ULONGLONG ulNaN = 0xFFFFFFFFFFFFFFFF;
*pRetVal = *reinterpret_cast<double*>(&ulNaN);
Alternatively, you can use the following function from the standard C++ libraries:
numeric_limits<double>::quiet_NaN( )
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2003 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | uiautomationcore.h (include UIAutomation.h) |
| DLL | Uiautomationcore.dll |