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Xtremehobo

Resizing windows and scrollbars

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		case WM_SIZE:

			 RECT rt3;
			 GetClientRect(hWnd,&rt3);
			 MoveWindow(hscroll,rt3.right-18,30,18,rt3.bottom-50,true);
			 break;
How come this code doesn't move my scrollbar when I resize my window? It should be moving the scrollbar so its on the right-side of the window, but it just stays at its initial position and doesn't move. I'm obviously doing something wrong? Thakns [edited by - Xtremehobo on May 18, 2004 10:59:24 PM]

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MoveWindow returns 1 (true?) but GetLastError returns 6 (invalid handle).

If I change the number subtracted from the x-position in MoveWindow, however, it does change the position of the scrollbar.

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I am unsure if the client rect as already been modified when WM_SIZE is sent, I suspect it has but in either case GetClientRect() is unnecessary.

quote:

lParam
The low-order word of lParam specifies the new width of the client area.
The high-order word of lParam specifies the new height of the client area.


I would try using those values instead of those returned by GetClientRect().


Thanks Salsa!Colin Jeanne | Invader''s Realm
"I forgot I had the Scroll Lock key until a few weeks ago when some asshole program used it. It even used it right" - Conner McCloud

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quote:
Original post by Invader X

quote:

lParam
The low-order word of lParam specifies the new width of the client area.
The high-order word of lParam specifies the new height of the client area.


I would try using those values instead of those returned by GetClientRect().



Tried it, still doesn''t work

Something that I have noticed though is it WILL set the correct position the FIRST time my window receives WM_SIZE but it''ll only position the scrollbar once and it''ll never work again after that.

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I just tried that snippet, it works fine. Almost.

The first WM_SIZE you receive will be BEFORE the childs are even created. That MoveWindow might try to move a non-existant window. That won''t be too bad, but it''s a mistake. Before calling that MoveWindow check if the scrollbar has been created already.

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Weirddd... The snippet works if I stick it in a more simple app, but won''t work when I have it in my main app :-\

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