|sorry, what i wanna is just a modeless dialog not control bar.
I write a large image's browser. There is a modeless dialog which show the overview of whole image. It is on top of all the views. Its size is about 200*200, if I take a docking control bar, it will take the space 1024*200 that waste two much space.
It just like photoshop, the panels of all kind tool on top of image. But I wanna my modeless dialog has a docking capability.
In fact, it is also acceptable to make this dialog just on the left corner of the free space in mainframe. But I need the rect in the mainframe beside the toolbar, for GetClientRect doesn't get rid of the space toolbar occupied.