140 cr.cpMin = lCurPos;
141 cr.cpMax = lCurPos;
142 EditSetSel(cr);
143 }
144
145 /*
146 * Cleanup the state variables when left mouse button is released.
147 * These state variables are designed to reflect the selection state
148 * while the left mouse button is pressed and be set to -1 otherwise.
149 */
150 SetStartSelectionPos(-1);
151 SetEndSelectionPos(-1);
152 SetLastSelectionPos(-1);
153
154 delete msg;
155 return mrConsume;
156 } else if (msg->message == WM_MOUSEMOVE && (msg->wParam & MK_LBUTTON)) {
157
158 /*
159 * We consume WM_MOUSEMOVE while the left mouse button is pressed,
160 * so we have to simulate autoscrolling when mouse is moved outside
161 * of the client area.
162 */
163 POINT p;
164 RECT r;
165 BOOL bScrollLeft = FALSE;
166 BOOL bScrollRight = FALSE;
167 BOOL bScrollUp = FALSE;
168 BOOL bScrollDown = FALSE;
169
170 p.x = msg->pt.x;
171 p.y = msg->pt.y;
172 VERIFY(::GetClientRect(GetHWnd(), &r));
173
174 if (p.x < 0) {
175 bScrollLeft = TRUE;
176 p.x = 0;
177 } else if (p.x > r.right) {
178 bScrollRight = TRUE;
179 p.x = r.right - 1;
180 }
181 LONG lCurPos = EditGetCharFromPos(p);
182
183 if (GetStartSelectionPos() != -1 &&
184 GetEndSelectionPos() != -1 &&
185 lCurPos != GetLastSelectionPos()) {
186
187 CHARRANGE cr;
188
189 SetLastSelectionPos(lCurPos);
190
191 cr.cpMin = GetStartSelectionPos();
192 cr.cpMax = GetLastSelectionPos();
193
194 EditSetSel(cr);
195 }
196
197 if (bScrollLeft == TRUE || bScrollRight == TRUE) {
198 SCROLLINFO si;
199 memset(&si, 0, sizeof(si));
200 si.cbSize = sizeof(si);
201 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE;
202
203 SendMessage(EM_SHOWSCROLLBAR, SB_HORZ, TRUE);
204 VERIFY(::GetScrollInfo(GetHWnd(), SB_HORZ, &si));
205 SendMessage(EM_SHOWSCROLLBAR, SB_HORZ, FALSE);
206
207 if (bScrollLeft == TRUE) {
208 si.nPos = si.nPos - si.nPage / 2;
209 si.nPos = max(si.nMin, si.nPos);
210 } else if (bScrollRight == TRUE) {
211 si.nPos = si.nPos + si.nPage / 2;
212 si.nPos = min(si.nPos, si.nMax);
213 }
214 /*
215 * Okay to use 16-bit position since RichEdit control adjusts
216 * its scrollbars so that their range is always 16-bit.
217 */
218 DASSERT(abs(si.nPos) < 0x8000);
219 SendMessage(WM_HSCROLL,
220 MAKEWPARAM(SB_THUMBPOSITION, LOWORD(si.nPos)));
221 }
222 delete msg;
223 return mrConsume;
224 } else if (msg->message == WM_KEYDOWN) {
225 UINT virtualKey = (UINT) msg->wParam;
226
227 switch(virtualKey){
228 case VK_RETURN:
229 case VK_UP:
230 case VK_DOWN:
231 case VK_LEFT:
232 case VK_RIGHT:
233 case VK_DELETE:
234 case VK_BACK:
235 SystemParametersInfo(SPI_GETBEEP, 0, &systemBeeperEnabled, 0);
236 if(systemBeeperEnabled){
237 // disable system beeper for the RICHEDIT control to be compatible
238 // with the EDIT control behaviour
239 SystemParametersInfo(SPI_SETBEEP, 0, NULL, 0);
240 }
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140 cr.cpMin = lCurPos;
141 cr.cpMax = lCurPos;
142 EditSetSel(cr);
143 }
144
145 /*
146 * Cleanup the state variables when left mouse button is released.
147 * These state variables are designed to reflect the selection state
148 * while the left mouse button is pressed and be set to -1 otherwise.
149 */
150 SetStartSelectionPos(-1);
151 SetEndSelectionPos(-1);
152 SetLastSelectionPos(-1);
153
154 delete msg;
155 return mrConsume;
156 } else if (msg->message == WM_MOUSEMOVE && (msg->wParam & MK_LBUTTON)) {
157
158 /*
159 * We consume WM_MOUSEMOVE while the left mouse button is pressed,
160 * so we have to simulate selection autoscrolling when mouse is moved
161 * outside of the client area.
162 */
163 POINT p;
164 p.x = msg->pt.x;
165 p.y = msg->pt.y;
166 LONG lCurPos = EditGetCharFromPos(p);
167
168 if (GetStartSelectionPos() != -1 &&
169 GetEndSelectionPos() != -1 &&
170 lCurPos != GetLastSelectionPos()) {
171
172 CHARRANGE cr;
173
174 SetLastSelectionPos(lCurPos);
175
176 cr.cpMin = GetStartSelectionPos();
177 cr.cpMax = GetLastSelectionPos();
178
179 EditSetSel(cr);
180 }
181 delete msg;
182 return mrConsume;
183 } else if (msg->message == WM_KEYDOWN) {
184 UINT virtualKey = (UINT) msg->wParam;
185
186 switch(virtualKey){
187 case VK_RETURN:
188 case VK_UP:
189 case VK_DOWN:
190 case VK_LEFT:
191 case VK_RIGHT:
192 case VK_DELETE:
193 case VK_BACK:
194 SystemParametersInfo(SPI_GETBEEP, 0, &systemBeeperEnabled, 0);
195 if(systemBeeperEnabled){
196 // disable system beeper for the RICHEDIT control to be compatible
197 // with the EDIT control behaviour
198 SystemParametersInfo(SPI_SETBEEP, 0, NULL, 0);
199 }
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