// used by And/Or conditions to allocate an array of pointers to other conditions
internal static SafeConditionMemoryHandle AllocateConditionArrayHandle(Condition [] conditions)
{
// Allocate SafeHandle first to avoid failure later.
SafeConditionMemoryHandle sh = new SafeConditionMemoryHandle();
int intPtrSize = Marshal.SizeOf(typeof(IntPtr));
try { }
finally
{
IntPtr mem = Marshal.AllocCoTaskMem(conditions.Length * intPtrSize);
sh.SetHandle(mem);
}
unsafe
// Suppress "Exposing unsafe code thru public interface" UiaCoreApi is trusted
#pragma warning suppress 56505
{
IntPtr *pdata = (IntPtr *)sh.handle;
for (int i = 0; i < conditions.Length; i++)
{
*pdata++ = conditions[i]._safeHandle.handle;
}
}
return(sh);
}
// used by And/Or conditions to allocate an array of pointers to other conditions
internal static SafeConditionMemoryHandle AllocateConditionArrayHandle(Condition [] conditions)
{
// Allocate SafeHandle first to avoid failure later.
SafeConditionMemoryHandle sh = new SafeConditionMemoryHandle();
int intPtrSize = Marshal.SizeOf(typeof(IntPtr));
#pragma warning disable SYSLIB0004 // The Constrained Execution Region (CER) feature is not supported.
RuntimeHelpers.PrepareConstrainedRegions(); // ensures that the following finally block is atomic
#pragma warning restore SYSLIB0004 // The Constrained Execution Region (CER) feature is not supported.
try { }
finally
{
IntPtr mem = Marshal.AllocCoTaskMem(conditions.Length * intPtrSize);
sh.SetHandle(mem);
}
unsafe
// Suppress "Exposing unsafe code thru public interface" UiaCoreApi is trusted
#pragma warning suppress 56505
{
IntPtr *pdata = (IntPtr *)sh.handle;
for (int i = 0; i < conditions.Length; i++)
{
*pdata++ = conditions[i]._safeHandle.handle;
}
}
return(sh);
}
// uiaCondition is one of the Uia condition structs - eg UiaCoreApi.UiaAndOrCondition
internal static SafeConditionMemoryHandle AllocateConditionHandle(object uiaCondition)
{
// Allocate SafeHandle first to avoid failure later.
SafeConditionMemoryHandle sh = new SafeConditionMemoryHandle();
int size = Marshal.SizeOf(uiaCondition);
try { }
finally
{
IntPtr mem = Marshal.AllocCoTaskMem(size);
sh.SetHandle(mem);
}
Marshal.StructureToPtr(uiaCondition, sh.handle, false);
return(sh);
}
// uiaCondition is one of the Uia condition structs - eg UiaCoreApi.UiaAndOrCondition
internal static SafeConditionMemoryHandle AllocateConditionHandle(object uiaCondition)
{
// Allocate SafeHandle first to avoid failure later.
SafeConditionMemoryHandle sh = new SafeConditionMemoryHandle();
int size = Marshal.SizeOf(uiaCondition);
RuntimeHelpers.PrepareConstrainedRegions(); // ensures that the following finally block is atomic
try { }
finally
{
IntPtr mem = Marshal.AllocCoTaskMem(size);
sh.SetHandle(mem);
}
Marshal.StructureToPtr(uiaCondition, sh.handle, false);
return(sh);
}
// uiaCondition is one of the Uia condition structs - eg UiaCoreApi.UiaAndOrCondition
internal static SafeConditionMemoryHandle AllocateConditionHandle(object uiaCondition)
{
// Allocate SafeHandle first to avoid failure later.
SafeConditionMemoryHandle sh = new SafeConditionMemoryHandle();
int size = Marshal.SizeOf(uiaCondition);
#pragma warning disable SYSLIB0004 // The Constrained Execution Region (CER) feature is not supported.
RuntimeHelpers.PrepareConstrainedRegions(); // ensures that the following finally block is atomic
#pragma warning restore SYSLIB0004 // The Constrained Execution Region (CER) feature is not supported.
try { }
finally
{
IntPtr mem = Marshal.AllocCoTaskMem(size);
sh.SetHandle(mem);
}
Marshal.StructureToPtr(uiaCondition, sh.handle, false);
return(sh);
}
