Hi Tomas,
Based on my understanding, your FormA and FormB are both the child forms of
the main MDI window. Now, you want to obtain the C++/CLI reference to the
FormB if opened. If I have misunderstood you, please feel free to tell me,
thanks.
Normally, when we are creating the FormB instance in the code, we'd better
store FormB's reference in a private field or property in FormA class, so
that the FormA can retrieve FormB's reference in later time.
If you did not store the FormB's reference during creation, you have to
enumerate through the child form collection and get the "FormB" reference
like below:
System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
Form^ mdiparent=this->MdiParent;
FormB^ formB;
for(int i=0;i<mdiparent->MdiChildren->Length;i++)
{
if(mdiparent->MdiChildren[i]->GetType()->FullName->Contains("FormB"))
{
formB=dynamic_cast<FormB^>(mdiparent->MdiChildren[i]);
}
}
if(formB!=nullptr)
{
MessageBox::Show(formB->Handle::get().ToString());
}
}
Hope this helps.
Best regards,
Jeffrey Tan
Microsoft Online Community Support
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