Program execution hangs at accSelect.

kartikdasani

I use the following lines of code in my program to get focus to a particular object and select it: hr = (SELFLAG_TAKEFOCUS,varTemp); hr = pTempAcc->accLocation(&left,&top,&width,&height,varTemp); The trouble is that after the my program has been running for a while ( as such there is no specific limit or minimum), the execution just hangs at pTempAcc->accSelect() and the only way to stop it is a forced exit. Can anyone tell me why this might happen.

enhzflep

There appears to be some code missing from the 1st line you posted. Looking at the MSDN page for IAccessible::accSelect Method[^] we can see an example given as:

HRESULT SelectItemAtPoint(POINT point)
{
VARIANT varItem;
IAccessible* pAcc;
HRESULT hr = AccessibleObjectFromPoint(point, &pAcc, &varItem);
if ((hr == S_OK))
{
hr = pAcc->accSelect((SELFLAG_TAKEFOCUS | SELFLAG_TAKESELECTION), varItem);
VariantClear(&varItem);
pAcc->Release();
}
return hr;
}

Which immediately causes me to wonder if perhaps you haven't done the clean-up for your equivalents of varItem and pAcc in the above block

kartikdasani

The same problem occurs even when i give both the flags as follows:

hr = pAcc->accSelect((SELFLAG_TAKEFOCUS | SELFLAG_TAKESELECTION), varItem);

enhzflep

Do you perform the clean-up as shown in the example in my last post?

kartikdasani

Clean up does not help either.