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Added mouse wheel support for MSW. It generates a wxMouseEvent with a

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type of wxEVT_MOUSEWHEEL.

wxMouseEvent has new members and accessors to transport mouse wheel
rotation data.  New members and accessors are documented.

wxGenericScrolledWindow modified to turn mouse wheel events into
scroll actions.

Added wxUSE_MOUSEWHEEL to setup0.h to allow disabling the platform
specific parts.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9990 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2001-05-04 07:26:30 +00:00
parent bfb9ee966d
commit d2c52078dc
8 changed files with 162 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
src/msw/window.cpp
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@@ -108,6 +108,15 @@
#define SIF_TRACKPOS 16
#endif
#if wxUSE_MOUSEWHEEL
#ifndef WM_MOUSEWHEEL
#define WM_MOUSEWHEEL 0x020A
#define WHEEL_DELTA 120
#define SPI_GETWHEELSCROLLLINES 104
#endif
#endif
// ---------------------------------------------------------------------------
// global variables
// ---------------------------------------------------------------------------
@@ -1910,6 +1919,12 @@ long wxWindow::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
wParam);
break;
#if wxUSE_MOUSEWHEEL
case WM_MOUSEWHEEL:
processed = HandleMouseWheel(wParam, lParam);
break;
#endif
case WM_LBUTTONDOWN:
// set focus to this window
if (AcceptsFocus())
@@ -3347,6 +3362,31 @@ bool wxWindow::HandleMouseMove(int x, int y, WXUINT flags)
return HandleMouseEvent(WM_MOUSEMOVE, x, y, flags);
}
bool wxWindow::HandleMouseWheel(WXWPARAM wParam, WXLPARAM lParam)
{
#if wxUSE_MOUSEWHEEL
wxMouseEvent event(wxEVT_MOUSEWHEEL);
InitMouseEvent(event,
GET_X_LPARAM(lParam),
GET_Y_LPARAM(lParam),
LOWORD(wParam));
event.m_wheelRotation = (short)HIWORD(wParam);
event.m_wheelDelta = WHEEL_DELTA;
int linesPer;
if (!SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &linesPer, 0))
linesPer = 1;
event.m_linesPerAction = linesPer;
return GetEventHandler()->ProcessEvent(event);
#else
return FALSE;
#endif
}
// ---------------------------------------------------------------------------
// keyboard handling
// ---------------------------------------------------------------------------
@@ -4098,6 +4138,7 @@ const char *wxGetMessageName(int message)
case 0x0207: return "WM_MBUTTONDOWN";
case 0x0208: return "WM_MBUTTONUP";
case 0x0209: return "WM_MBUTTONDBLCLK";
case 0x020A: return "WM_MOUSEWHEEL";
case 0x0210: return "WM_PARENTNOTIFY";
case 0x0211: return "WM_ENTERMENULOOP";
case 0x0212: return "WM_EXITMENULOOP";