Changeset 498 for trunk/src/gui/kernel/qwidget_pm.cpp

Timestamp:

Feb 1, 2010, 12:24:47 PM (15 years ago)

Author:

Dmitry A. Kuminov

Message:

gui/kernel: Implemented delivering of QEvent::NonClientAreaMouse* events to top-level widgets (#122).

File:

• trunk/src/gui/kernel/qwidget_pm.cpp (modified) (2 diffs)

trunk/src/gui/kernel/qwidget_pm.cpp

@@ -71 +71 @@
 extern PFNWP QtOldFrameProc;
 extern MRESULT EXPENTRY QtFrameProc(HWND, ULONG, MPARAM, MPARAM);
+extern PFNWP QtOldFrameCtlProcs[FID_HORZSCROLL - FID_SYSMENU + 1];
+extern MRESULT EXPENTRY QtFrameCtlProc(HWND, ULONG, MPARAM, MPARAM);
 
 #if !defined(QT_NO_SESSIONMANAGER)
@@ -1161 +1163 @@
                 QtOldFrameProc = oldProc;
 
+            // subclass all standard frame controls to get non-client mouse events
+            // (note: the size of the ctls array must match QtOldFrameCtlProcs)
+            HWND ctls[FID_HORZSCROLL - FID_SYSMENU + 1];
+            if (WinMultWindowFromIDs(fId, ctls, FID_SYSMENU, FID_HORZSCROLL) > 0) {
+                for (size_t i = 0; i < sizeof(ctls)/sizeof(ctls[0]); ++i) {
+                    if (ctls[i] != NULLHANDLE) {
+                        oldProc = WinSubclassWindow(ctls[i], QtFrameCtlProc);
+                        // remember the old proc only once: it's the same for
+                        // all standard frame control windows.
+                        if (!QtOldFrameCtlProcs[i])
+                            QtOldFrameCtlProcs[i] = oldProc;
+                    }
+                }
+            }
+
             removeSysMenuAccels(fId);