Winapi detect button hovering

user_8112985 0
Viewed 2186

I've got a C++ project in which I'm using the Winapi to develop a window with a button and I want to change the text of the button when it's being hovered. For example, changing "Click me" to "Click me NOW!", when hovered. I've tried searching but I've not found any good ways to do this.

I noticed that when user hovers, the WM_NOTIFY message is received, but I don't know how to ensure that it has been called by the mouse hover. I've found that I can use TrackMouseEvent to detect hovering, but it's limited to a period of time and I want to execute an action every time the user hovers the button.

Here is how I create a button:

HWND Button = CreateWindow("BUTTON", "Click me",
        WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON | BS_NOTIFY,
        20, 240, 120, 20,
        hwnd, (HMENU)101, NULL, NULL);

And this my window procedure:

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{

    switch (msg)
    {
    case WM_NOTIFY:
    {
        //??? Here is where I get a message everytime I hover the button, But I don't know any proper way to see if it has been executed by the button.
    }
    case WM_CREATE: //On Window Create
    {
        //...
    }
    case WM_COMMAND: //Command execution
    {
        //...
        break;
    }
    case WM_DESTROY: //Form Destroyed
    {
        PostQuitMessage(0);
        break;
    }
    }
    return DefWindowProc(hwnd, msg, wParam, lParam);
}
hover mouse button winapi c++
3 Answers

You can use simply SFML to do this.

Code:

RectangleShape button;
button.setPosition(Vector2f(50, 50));
button.setSize(Vector2f(100, 40));
button.setFillColor(Color::Green);
if(button.getGlobalBounds().contains(static_cast<Vector2f>(Mouse::getPosition(/*your 
window name*/window)
{
    button.setFillColor(Color::Red);
}
user_94245840
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