[mf] 18278: one-click activation of "Start" button

one-click activation of "Start" button
Modified: trunk/reactos/subsys/system/explorer/taskbar/desktopbar.cpp
Modified: trunk/reactos/subsys/system/explorer/taskbar/desktopbar.h
  _____  

Modified: trunk/reactos/subsys/system/explorer/taskbar/desktopbar.cpp
--- trunk/reactos/subsys/system/explorer/taskbar/desktopbar.cpp
2005-10-05 19:47:28 UTC (rev 18277)
+++ trunk/reactos/subsys/system/explorer/taskbar/desktopbar.cpp
2005-10-05 19:48:29 UTC (rev 18278)
@@ -99,8 +99,11 @@

 
 	_taskbar_pos = start_btn_width + 6;
 
-	new PictureButton(Button(_hwnd, start_str, 1, 1,
start_btn_width, REBARBAND_HEIGHT, IDC_START,
WS_VISIBLE|WS_CHILD|BS_OWNERDRAW),
-
SmallIcon(IDI_STARTMENU)/*, GetStockBrush(WHITE_BRUSH)*/);
+	 // create "Start" button
+	HWND hwndStart = Button(_hwnd, start_str, 1, 1, start_btn_width,
REBARBAND_HEIGHT, IDC_START, WS_VISIBLE|WS_CHILD|BS_OWNERDRAW);
+	new StartButton(hwndStart);
+	 // disable double clicks
+	SetClassLong(hwndStart, GCL_STYLE, GetClassLong(hwndStart,
GCL_STYLE) & ~CS_DBLCLKS);
 
 	 // create task bar
 	_hwndTaskBar = TaskBar::Create(_hwnd);
@@ -164,6 +167,71 @@
 }
 
 
+StartButton::StartButton(HWND hwnd)
+ :	PictureButton(hwnd, SmallIcon(IDI_STARTMENU),
GetSysColorBrush(COLOR_BTNFACE))
+{
+}
+
+LRESULT	StartButton::WndProc(UINT nmsg, WPARAM wparam, LPARAM
lparam)
+{
+	switch(nmsg) {
+	   // one click activation: handle button-down message, don't
wait for button-up
+	  case WM_LBUTTONDOWN:
+		if (!Button_GetState(_hwnd)) {
+			Button_SetState(_hwnd, TRUE);
+
+			SetCapture(_hwnd);
+
+			SendMessage(GetParent(_hwnd), WM_COMMAND,
MAKEWPARAM(GetDlgCtrlID(_hwnd),0), 0);
+		}
+
+		Button_SetState(_hwnd, FALSE);
+		break;
+
+	   // re-target mouse move messages while moving the mouse
cursor through the start menu
+	  case WM_MOUSEMOVE:
+		if (GetCapture() == _hwnd) {
+			POINT pt = {GET_X_LPARAM(lparam),
GET_Y_LPARAM(lparam)};
+
+			ClientToScreen(_hwnd, &pt);
+			HWND hwnd = WindowFromPoint(pt);
+
+			if (hwnd && hwnd!=_hwnd) {
+				ScreenToClient(hwnd, &pt);
+				SendMessage(hwnd, WM_MOUSEMOVE, 0,
MAKELPARAM(pt.x, pt.y));
+			}
+		}
+		break;
+
+	  case WM_LBUTTONUP:
+		if (GetCapture() == _hwnd) {
+			ReleaseCapture();
+
+			POINT pt = {GET_X_LPARAM(lparam),
GET_Y_LPARAM(lparam)};
+
+			ClientToScreen(_hwnd, &pt);
+			HWND hwnd = WindowFromPoint(pt);
+
+			if (hwnd && hwnd!=_hwnd) {
+				ScreenToClient(hwnd, &pt);
+				PostMessage(hwnd, WM_LBUTTONDOWN, 0,
MAKELPARAM(pt.x, pt.y));
+				PostMessage(hwnd, WM_LBUTTONUP, 0,
MAKELPARAM(pt.x, pt.y));
+			}
+		}
+		break;
+
+	  case WM_CANCELMODE:
+		ReleaseCapture();
+		break;
+
+	  default:
+		return super::WndProc(nmsg, wparam, lparam);
+	}
+
+	return 0;
+}
+
+
 void DesktopBar::RegisterHotkeys()
 {
 	 // register hotkey WIN+E opening explorer
@@ -323,7 +391,7 @@
 int DesktopBar::Command(int id, int code)
 {
 	switch(id) {
-	  case IDC_START:	///@todo startmenu should popup for
WM_LBUTTONDOWN, not for WM_COMMAND
+	  case IDC_START:
 		ShowStartMenu();
 		break;
 
  _____  

Modified: trunk/reactos/subsys/system/explorer/taskbar/desktopbar.h
--- trunk/reactos/subsys/system/explorer/taskbar/desktopbar.h
2005-10-05 19:47:28 UTC (rev 18277)
+++ trunk/reactos/subsys/system/explorer/taskbar/desktopbar.h
2005-10-05 19:48:29 UTC (rev 18278)
@@ -117,3 +117,15 @@

 	const UINT WM_TASKBARCREATED;
 #endif
 };
+
+
+ /// special "Start" button with one click activation
+struct StartButton : public PictureButton
+{
+	typedef PictureButton super;
+
+	StartButton(HWND hwnd);
+
+protected:
+	LRESULT	WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam);
+};