How do I create multiple windows in different classes than the main function in C++ with Win32

Question

How do I create multiple windows in different classes than the WinMain function in C++ with Win32?

What I am trying to do:

My Source Files:

• FileThatContainsMainFunction.cpp
• Window1.cpp
• Window2.cpp

In the Main Function I would like to make two objects (one for Window1 and one or Window2) that create Win32 Windows in their constuctors. eg:

Window1 w1;
Window2 w2;

Note: This question is directed towards C++ classes, not Win32 Classes.

Answer 1

It works pretty much the way you described in your question:

Window1.h

#ifndef Window1H

#include <windows.h>

class Window1
{
private:
    HWND hWnd;
public:
    Window1();
    ~Window1();
};

#endif

Window1.cpp

#include "Window1.h"

Window1::Window1()
{
    // register and create window as needed
    hWnd = CreateWindowEx(...);
}

Window1::~Window1()
{
    DestroyWindow(hWnd);
}

Window2.h

#ifndef Window2H

#include <windows.h>

class Window2
{
private:
    HWND hWnd;
public:
    Window2();
    ~Window2();
};

#endif

Window2.cpp

#include "Window2.h"

Window2::Window2()
{
    // register and create window as needed
    hWnd = CreateWindowEx(...);
}

Window2::~Window2()
{
    DestroyWindow(hWnd);
}

FileThatContainsMainFunction.cpp

#include "Window1.h"
#include "Window2.h"

int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    Window1 w1;
    Window2 w2;
    //...
    return 0;
}