Global variables inside VCL components member functions

Messier Miche

CBuilder Developer

Fri, 24 Jan 2003 03:00:00 GMT

Global variables inside VCL components member functions

I am using a global variable in a VCL application. When I use the
variable inside the WinMain block, but outside any VCL component's
member function, everything works fine. However, inside such a function,

if I try to assing a value to the variable, read its value or address,
or pass its value or address in parameter, either the instruction is
ignored at runtime, or a wrong value is passed.

I would be very thankful to anyone having a solution and/or an
explanation to this strange problem (Your name could appear in the
"Credits" section of a new Management Integrated System !!!).

Raphael : bu...@qc.aira.com

Team

CBuilder Developer

Sat, 25 Jan 2003 03:00:00 GMT

Re:Global variables inside VCL components member functions

Hi Messier --

Quote

> I am using a global variable in a VCL application. When I use the
> variable inside the WinMain block, but outside any VCL component's
> member function, everything works fine. However, inside such a
> function, if I try to assing a value to the variable, read its
> value or address, or pass its value or address in parameter, either
> the instruction is ignored at runtime, or a wrong value is passed.

What type of variable are your trying to store? I can't seem to
reproduce this...

// in project source...

int MyGlobalVar = 1001;
WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
try
{
ShowMessage(MyGlobalVar);
Application->Initialize();
Application->CreateForm(__classid(TForm1), &Form1);
Application->Run();
}
catch (Exception &exception)
{
Application->ShowException(&exception);
}
return 0;