- // Find parent's size, if it exists, to set up a possible default
- // panel size the size of the parent window
- RECT rectParent;
- if ( parent )
+ if ( pos.x == -1 )
+ {
+ // if set x to CW_USEDEFAULT, y parameter is ignored anyhow so we can
+ // just as well set it to CW_USEDEFAULT as well
+ x =
+ y = CW_USEDEFAULT;
+ }
+ else
+ {
+ x = pos.x;
+ y = pos.y == -1 ? CW_USEDEFAULT : pos.y;
+
+ nonDefault = TRUE;
+ }
+
+ /*
+ NB: there used to be some code here which set the initial size of the
+ window to the client size of the parent if no explicit size was
+ specified. This was wrong because wxWindows programs often assume
+ that they get a WM_SIZE (EVT_SIZE) upon creation, however this broke
+ it. To see why, you should understand that Windows sends WM_SIZE from
+ inside ::CreateWindow() anyhow. However, ::CreateWindow() is called
+ from some base class ctor and so this WM_SIZE is not processed in the
+ real class' OnSize() (because it's not fully constructed yet and the
+ event goes to some base class OnSize() instead). So the WM_SIZE we
+ rely on is the one sent when the parent frame resizes its children
+ but here is the problem: if the child already has just the right
+ size, nothing will happen as both wxWindows and Windows check for
+ this and ignore any attempts to change the window size to the size it
+ already has - so no WM_SIZE would be sent.
+ */
+ if ( size.x == -1 )
+ {
+ // as abobe, h is not used at all in this case anyhow
+ w =
+ h = CW_USEDEFAULT;
+ }
+ else
projects / wxWidgets.git / blobdiff