JDK-4327676 : MouseDragged,MouseReleased are not triggered by Checkbox for Middle mouse button
  • Type: Bug
  • Component: client-libs
  • Sub-Component: java.awt
  • Affected Version: 1.3.0
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: windows_nt
  • CPU: x86
  • Submitted: 2000-04-04
  • Updated: 2000-10-11
  • Resolved: 2000-09-06
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Resolved: Release in which this issue/RFE has been resolved.
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Other
1.4.0 betaFixed
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JDK-4999383 - REG: on win32 Checkbox configured OFF is inappropriately automatically turned on
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JDK-4327664 - MouseDragged,MouseReleased are not triggered by List for Middle mouse button
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Description
In Windows,MouseDragged,MouseReleased Events are not triggered by Checkbox for Middle mouse button when mouse is dragged and Released outside the component.

How to reproduce the Bug? -------->

Run this sample code. You would see a frame with a CheckBox at the North.
Press the Middle mouse button inside the CheckBox and drag it.
Drag the mouse outside the CheckBox and drag it all over the screen without
releasing the mouse button. Release the mouse button when mouse pointer
is outside the CheckBox. Check whether Mouse Dragged Event,Mouse Released
Events are  triggering for CheckBox or not.
Comments
CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: merlin FIXED IN: merlin-beta INTEGRATED IN: merlin-beta VERIFIED IN: merlin-beta
14-06-2004
EVALUATION Commit to fix in Merlin (SQE yellow bug). eric.hawkes@eng 2000-05-07 Name: biR10147 Date: 09/01/2000 ###@###.### The only way to deliver mouse events to the components when the mouse is outside the window is to capture the mouse on each pressing. As a result, notification about clicking on the checkbox will not be sent, ITEM_STATE_CHANGED event will not be fired, and checkbox state will remain unchanged. To correct this, we have to send the notifications on each MouseUp. AwtComponent defines standard behavior, and AwtCheckbox overrides it to notify checkbox of clicking (only in case of left button and if both pressing and releasing were performed inside the checkbox). ======================================================================
11-06-2004
SUGGESTED FIX Name: biR10147 Date: 09/01/2000 ###@###.### Capture the mouse over a component where dragging started so mouse events could be delivered to the components properly. ------- awt_Component.h ------- *************** *** 500,505 **** --- 500,507 ---- BOOL m_dragged; /* in drag operation */ virtual INLINE HWND GetWrappeeHandle() { return NULL; } + virtual void AwtComponent::SetDragCapture(); + virtual void AwtComponent::ReleaseDragCapture(); private: ------- awt_Component.cpp ------- *************** *** 3749,3754 **** --- 3749,3764 ---- env->DeleteLocalRef(target); } + void AwtComponent::SetDragCapture() + { + ::SetCapture(GetHWnd()); + } + + void AwtComponent::ReleaseDragCapture() + { + ::ReleaseCapture(); + } + void AwtComponent::SendMouseEvent(long id, jlong when, long x, long y, long modifiers, long clickCount, long popupTrigger, *************** *** 3795,3800 **** --- 3805,3819 ---- env->ExceptionDescribe(); env->ExceptionClear(); } + + if (id == java_awt_event_MouseEvent_MOUSE_PRESSED) { + SetDragCapture(); + } + + if (id == java_awt_event_MouseEvent_MOUSE_RELEASED) { + ReleaseDragCapture(); + } + DASSERT(mouseEvent != NULL); if (pMsg != 0) { AwtAWTEvent::saveMSG(env, pMsg, mouseEvent); ------- awt_Checkbox.h ------- *************** *** 46,51 **** --- 46,52 ---- static int GetCheckSize(); /* Windows message handler functions */ + MsgRouting WmMouseUp(UINT flags, int x, int y, int button); MsgRouting WmNotify(UINT notifyCode); MsgRouting OwnerDrawItem(UINT ctrlId, DRAWITEMSTRUCT far& drawInfo); MsgRouting WmPaint(HDC hDC); ------- awt_Checkbox.cpp ------- *************** *** 114,119 **** --- 114,135 ---- return checkbox; } + MsgRouting + AwtCheckbox::WmMouseUp(UINT flags, int x, int y, int button) + { + MsgRouting mrResult = AwtComponent::WmMouseUp(flags, x, y, button); + + POINT p = {x, y}; + RECT rect; + ::GetClientRect(GetHWnd(), &rect); + + if (::PtInRect(&rect, p) && button == LEFT_BUTTON) { + WmNotify(BN_CLICKED); + } + + return mrResult; + } + MsgRouting AwtCheckbox::WmNotify(UINT notifyCode) { ======================================================================
11-06-2004