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copied!<p>I don't know if I'm in love with this answer, but here's a possibility using template argument deduction. <strong>NOTE</strong> I do not have my compiler on me, I'll double-check it tomorrow unless somebody else out there wants to give it a whirl.</p> <pre><code>class sharedWindowOpts { public: sharedWindowOpts() {}; // Commonly used options template <class optType> static optType& at(int x, int y, optType& opts) { opts.mX=x; opts.mY=y; return opts; }; template <class optType> static optType& background(HBRUSH b, optType& opts) { opts.mBackground=b; return opts; }; // etc... } class createWindowOpts : public sharedWindowOpts { public: createWindowOpts() : sharedwindowOpts() {}; // These can't be used with child windows, or aren't needed template <class optType> static optType& menu(HMENU m, optType& opts) { opts.mMenuOrId=m; return opts; }; template <class optType> static optType& owner(HWND hwnd, optType& opts) { opts.mParentOrOwner=hwnd; return opts; }; } </code></pre> <p>Then you would call CreateWindow like this:</p> <pre><code>CreateWindow( createWindowOpts::owner(hwnd, createWindowOpts::at(0, 100, // can use createWindowOpts because it doesn't hide sharedWindowsOpts::at createWindowOpts::menu(hmenu, createWindowOpts() ) ) ) ); </code></pre> <p>The obnoxious things about this, of course, are having to use the static method calling syntax and all the extra parentheses. If you replace the static member functions with non-member functions this can be eliminated. It does avoid the type-casting and the extra template classes, though.</p> <p><strong>Personally, I'd rather have the odd code in the library as with your method, than everywhere the library is being used like in mine.</strong></p>

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