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I have created a simple game using Win32 and gdi. I would like to have a track bar at the bottom that tracks a global variable. I’m just not sure how to add controls. How could I add a trackbar? I can imagine it would get created in the wm_create event.
Do you mean TrackBar or StatusBar?
A StatusBar is normally located at the bottom of a window and displays informational messages about the application status, a TrackBar allows the user to select a value. Do you want to allow the user to select the value of your global variable or do you just want to display the current value of the variable? (I’m not sure if the trackbar will display the current value of the variable without extra work.)
Either way, there are samples for both StatusBar and TrackBar located on MSDN.
The child windows are normally created either in the WM_CREATE of the parent or after the parent window has been created (i.e. when you obtain a valid hWnd for the parent) and after calling InitCommonControls() and/or initializing COM if needed.