Thread: put vars in separate function, but need reference

here is what i'm trying to do. what i want to do, so i dont clutter up the WM_CREATE message in the main window's procedure, is call a function so that it creates and modifies (font, size, placement, etc.) the controls for this main window. see, this function is a one-time call sort of thing, and i'm doing it just for neatness and readability, but i dont know how to logically go about this.

okay, here is my wndproc:

Code:

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HWND     hwndControls[NUM_OF_CTRLS];

    switch(message)
    {
        case WM_CREATE:
            hwndControls = Setup_Controls();
            return 0;

        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;

        default:
            break;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}

and i want someway to modify (and create) the controls in another function but have the same scope and maneuverability for WnProc. how should i do this?

thanks!

alright, i'll give that a try and then get back to you with results.

i'm having a little trouble getting this to work. i took your advice and just used a pointer to the struct as a param. and i'm writing the function right now, and i just have a couple of questions about some things.

for instance, in the Setup_Controls() function, it takes the pointer to the struct, and then i have to loop through each CTRLSET struct item to create each control. but, how do i know when the last item has been reached? for instance, i loop with an incrementing variable, i, but how do i test for the last element of the CTRLSET array?

here is my function so far:

Code:

int Setup_Controls(CTRLSET *csCtrls, HWND hParent, HINSTANCE hInstance)
{
    int     i = 0;

    while(csCtrls[i])
    {
        csCtrls[i].hCtrl = CreateWindow(csCtrls[i].szClass,
                                csCtrls[i].szText, csCtrls[i].iStyle,
                                csCtrls[i].pPos.x, csCtrls[i].pPos.y,
                                csCtrls[i].pSize.x, csCtrls[i].pSize.y,
                                hParent, (HMENU)csCtrls[i].iID, hInstance, NULL);
        i++;
    }

    return 0;
}

and here's the struct:

Code:

typedef struct
{
    HWND    hCtrl;
    int     iID;
    TCHAR   szClass[33];
    TCHAR   szText[255];
    int     iStyle;
    POINT   pPos;
    POINT   pSize;
}CTRLSET;

any idea how to test for the last element in the CTRLSET array? how would i know when i'm done with the loop?

thanks.