Problems in use of Active Qt
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Good evening,everyone.I am learning Active Qt module, but there are something wrong with special parameters in Com objects.
For example,this is a interface provided by a Com object:
@STDMETHODIMP CQtTest::AddSubMethod(long sum, VARIANT* oper1, VARIANT* oper2, long* ret)
{
*ret = 0;
if(oper1->vt != VT_I4)
{
::MessageBox(NULL,L"the frist param error",L"QtTest",0);
} else if(oper2->vt != VT_I4) {
::MessageBox(NULL,L"the second param error",L"QtTest",0);
} else {
oper1->lVal = sum + 1;
oper2->lVal = sum - 1;
*ret = 1;
}
return S_OK;
}@It usually can be described as
@long AddSubMethod(
[in] long sum,
[in, out] VARIANT* oper1,
[in, out] VARIANT* oper2);@According to the Qt document, VARIANT* is maped to QVariant&, so I try to use it as follow
@ int sum = 5;
int x = 0, y = 0;
QVariant v_x, v_y;
v_x.setValue(x); v_y.setValue(y);
int ret = obj.dynamicCall("AddSubMethod(long,QVariant&,QVariant&)", sum, v_x, v_y).toInt();
x = (1 == ret ? v_x.toInt() : -1);
y = (1 == ret ? v_y.toInt() : -1);@Howerver,it did not work.
What was wrong and how to use it correctly while the parameters are VARIANT* type?
thanks. -
