EngQuerySystemAttribute function (winddi.h)

The EngQuerySystemAttribute function queries processor-specific or system-specific capabilities.

Syntax

ENGAPI BOOL EngQuerySystemAttribute(
  [in]  ENG_SYSTEM_ATTRIBUTE CapNum,
  [out] PDWORD               pCapability
);

Parameters

[in] CapNum

Specifies the capability being queried. This parameter can be one of the following values:

Value	Meaning
EngNumberOfProcessors	GDI returns the number of active processors in the system.
EngOptimumAvailableSystemMemory	Not available for use.
EngOptimumAvailableUserMemory	Not available for use.
EngProcessorFeature	GDI returns a bitmask of flags that describe the features of the processor. Currently, GDI sets the QSA_MMX flag when an x86 processor has MMX support. QSA_MMX is relevant only on the x86 platform.

[out] pCapability

Pointer to the location that receives the result of the query. The value that GDI places in this parameter depends on the enumerated value specified by CapNum.

Return value

EngQuerySystemAttribute returns TRUE upon success. Otherwise, it returns FALSE.

Requirements

Requirement	Value
Minimum supported client	Available in Windows 2000 and later versions of the Windows operating systems.
Target Platform	Universal
Header	winddi.h (include Winddi.h)
Library	Win32k.lib
DLL	Win32k.sys