Re: wxDefaultCoord

On Sat, 10 Aug 2024 12:51:24 +0200 Andreas Falkenhahn wrote:

AF> So methods like wxWindow::SetSize() support passing wxDefaultCoord to
AF> the x and y coordinates "to indicate that the existing value should be
AF> used" but then wxDefaultCoord is defined as -1 which is a perfectly
AF> normal position, isn't it? So shouldn't wxDefaultCoord be something
AF> like -1000000 or so instead to make it identifiable as a magic value?
AF> Defining it as -1 looks weird to me. What if I want to move the window
AF> to the position x=-1 and y=-1? Doesn't seem possible with the current
AF> handling of wxDefaultCoord or am I missing something here?

 You can use wxSIZE_ALLOW_MINUS_ONE flag to treat -1 as a valid position.

 And yes, an API designed in 2024 would look very differently from one
designed in 1994 as it would take std::optional<int> or something like
that. But in 1994 we didn't know that, and even multiple displays (without
which the value -1 can't be useful) were either non-existent or, at least,
very uncommon.

 Regards,
VZ

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