[pjmlp]

From users point of view, from developer tooling experience, not really when compared to Visual Studio, .NET and C++ frameworks, even with the GUI civil war going at Redmond.

Although KParts and DCOP/D-Bus is certainly nicer than dealing with COM stuff.

[raverbashing]

Yes and I'd blame that on Qt more than anything else because they take C++ and bring it into their own magical world but it is very frail

Borland C++ interfaces for windows were better than anything else, MFC were a far 2nd place. .NET/C# made it useful again

[pjmlp]

OWL and VCL for the win!

Microsoft still doesn't have any tooling that comes close to C++ Builder. C++/CX was almost there, but then internal politics killed it.