classes....

[SteveCRM]

Im trying to remake my win32 graphics class. so far its works, if I put this as global:

	HDC hDC, hMemDC;
	HBITMAP hBitmap;
	BITMAP bm;
	PAINTSTRUCT ps;
	RECT rect;
                HINSTANCE ghInst2;

but I want to put it in my class....is this possible?

[Megatron]

If you want 1 copy per class, rather than 1 copy per instance, then declare it as static.

If that's not what you meant, please elabourate further (e.g: what objects do you want to be able to access it, and which ones do you not want to be able to access it).

[kedaman]

You might have to explain where and how you access those variables.

Variables with global scope are accessible from anywhere, that's what makes them bad. If you put them in a class, you have to instantiate the class and have accessors for them, then access them by the object's name. This is not a good idea, because classes should be as independent as possible and protect it's data, so i have to ask you what you want with the variables.

[SteveCRM]

Im using them to show a picture. I want 1 set per instance. But my graphic won't show (function) if I just put those in the class, the graphic only shows if they are global.

[kedaman]

how and where do you access them?

[SteveCRM]

through one of my classes functions. The function will be called in the WM_PAINT.

[kedaman]

well I was expecting more scope related information.
Anyways, you can do a false assertion in the accessor to track the access.

[SteveCRM]

*zoom* right over my head heres my class:

class graphics {
public:

~graphics()  {
}
graphics()  {
}
	void ReDraw(int x, int y, HWND window)  {

			hDC = BeginPaint(window, &ps) ;

			GetClientRect(window, &rect) ;

			hBitmap = LoadBitmap(ghInst, MAKEINTRESOURCE(IDB_BITMAP1));

			GetObject(hBitmap, sizeof(BITMAP), &bm);

			hMemDC = CreateCompatibleDC(hDC);
			SelectObject(hMemDC, hBitmap);

			BitBlt(hDC, x, y, bm.bmWidth, bm.bmHeight, hMemDC, 0, 0, SRCCOPY);

			DeleteDC(hMemDC);

			EndPaint(window, &ps);
			DeleteObject(hBitmap);

	}
};

now I want this to be able to show a graphic without having to put all those variables seperate for each instance of the class. where should I put them? everywhere I try to put them in the class, the function doesn't work. If they're global it does

[kedaman]

Well that's not enough either, because I have no idea if you're accessing them or not. Easiest for you would be to zip it all up.