class problem

[Nobody/Anonymous]

Hi,
I tried to initialize a new class within WM_CREATE:
CClass MyNewClass ();
Then I got the error below.
Can sombody please explain that to me? I don't understand. Why isn't it possible to create a new class in switch .....
case WM_CREATE:
CClass MyNewClass ();
break;
.........
Compiler: Default compiler
Building Makefile: "E:\Earth Lost\Software\Makefile.win"
Fhrt  make... aus
make.exe -f "E:\Earth Lost\Software\Makefile.win" all
g++.exe -c main.cpp -o main.o -I"C:/Programme/Dev-Cpp/include/c++"  -I"C:/Programme/Dev-Cpp/include"

main.cpp: In function `LRESULT WindowProcedure(HWND__*, unsigned int, unsigned
   int, long int)':
main.cpp:72: jump to case label

main.cpp:70:   crosses initialization of `CRebar MyRebar'

main.cpp:93: jump to case label

main.cpp:70:   crosses initialization of `CRebar MyRebar'

main.cpp:96: jump to case label

main.cpp:70:   crosses initialization of `CRebar MyRebar'

Internal compiler error: Error reporting routines re-entered.
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

make.exe: *** [main.o] Error 1

Ausfhrung beendet
Thank you very much

[Nobody/Anonymous]

you don't want to define your class in your message loop, try defining the class elswhere and then create an instance of the class in the loop, I think that should work.

// somewhere at beginning of program
class MyNewClass(){yadda.. yadda..};

// in switch statement
case WM_CREATE:
MyNewClass  MyObject;
break;

[ross]

i didnt take the time to read it but couldnt u do this?

#includes...

int main() {
CClass pointer;

int var_tobe_evaluated=10;
int var;

var=pointer::Function_from_class(var_tobe_evaluated);

cout<<"var = "<<var<<endl;
system("pause");
return 0;
}

[Nobody/Anonymous]

um... not the problem guys... any variable used in the wrong way inside of a switch case will see that error...

either use pointers... or use a global instance of the class.. something like this... just typed it in so there maybe be a slight parse error...

Zero Valintine

LRESULT CALLBACK msgproc(HWND h, UINT a, WPARAM b, LPARAM c){
static CClass * MyNewClass;
switch(a){
case WM_CREATE:
MyNewClass = new CClass();
break;

[Nobody/Anonymous]

hmm.. looking again, I think I read the original post wrong.. I thought you were defining the class under WM_CREATE (I saw CClass as class.. not awake yet..)

So.. I think what I would do is either create your class object globaly, or statically in the window function.

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static CClass MyClass;

switch (message)
{
case WM_CREATE:
etc...
}
}

[Ondrej Majerech]

I thought, that the question was, why cannot I declare a variable in switch statement. For example: switch (something) { case 1: int a = 3; } is OK, but the compiler won`t compile it. Why?

[Nobody/Anonymous]

Yes i got it.
Thanks everybody for the help.
Alex

[Nobody/Anonymous]

I just read the post from oxygenium.
The question is already in the air.
Alex