Form Left Edge Width, Form Top Caption and Menu Height

[LorinM]

I need to get the global X,Y Coordinates of the upper left corner of a form surface so to do so I need to know edge width and form caption height and mu height.

Not the top left of the form.
The form may or may not have a Menu showing.

So it needs to take into account the form left edge width, the form caption and the menu height.

Help please.

[VanGoghGaming]

Use GetWindowRect and GetClientRect API functions to get the rectangles for the whole window and its client area respectively.

WindowWidth is WindowRect.Right - WindowRect.Left
ClientWidth is ClientRect.Right - ClientRect.Left

EdgeWidth is (WindowWidth - ClientWidth) \ 2.
TitlebarHeight (with menu if any) is WindowHeight - ClientHeight - EdgeWidth

[Dry Bone]

- OR - Just use ClientToScreen to get the screen coordinates of point (0,0)

[LorinM]

To clarify, if I understand correctly, GetClientRect gets the coordinates of what I call the form canvas or the area on the form surface that I can draw on.

But if the cursor goes off the form what do I get ?

[xiaoyao]

maybe like this

[Elroy]

To clarify, if I understand correctly, GetClientRect gets the coordinates of what I call the form canvas or the area on the form surface that I can draw on.

But if the cursor goes off the form what do I get ?

Not sure what the cursor has to do with GetClientRect.

[LorinM]

Forget it.
I am now using system metrics to get the cursor position over my canvas.