CODEWITHSUNDEEP
c++winapic++20wtl
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Reputation: 3685

atlwin and modern c++ - specifically Create taking a RECT by value

Porting an existing WTL application to C++20. One of the issues we're running into is that atlwin.h has a method "Create" with the following signature:

    HWND Create(
    _In_opt_ HWND hWndParent,
    _In_ _U_RECT rect = NULL,
    _In_opt_z_ LPCTSTR szWindowName = NULL,
    _In_ DWORD dwStyle = 0,
    _In_ DWORD dwExStyle = 0,
    _In_ _U_MENUorID MenuOrID = 0U,
    _In_opt_ LPVOID lpCreateParam = NULL)

and was being called like this:

Create(hWnd, CRECT(0,0, 100, 200), ....)

The constructor for _U_RECT only takes a reference to a RECT or a pointer to a RECT, which means that you cannot pass a temporary in.

How have people worked around this? I'd hate to have to go through all of the code and replace the above code with:

CRect tmpRect(0, 0, 100, 200);
Create(hwnd, tmpRect, .....);

The version of MSVC being used is 14.37.32822.

Upvotes: 0

Views: 114

Answers (1)

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Reputation: 3685

I went with a mixin class to add a new method, which I was able to use in all the places I derived from WinImpl.

It added a Create method which had a CRect by value.

Upvotes: 0

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