Ticket #288: qcp.diff

src/gui/kernel/qapplication_pm.cpp

@@ -1034 +1034 @@
             }
 
             case WM_QUERYCONVERTPOS: { // IME input box position request
-                // @todo the proper detection of the caret position in the
-                // current widget requires implementing QInputContext. For now,
-                // just send the IME box to the lower left corner of the
-                // top-level window
                 PRECTL pcp = (PRECTL)mp1;
                 memset(pcp, 0xFF, sizeof(RECTL));
                 pcp->xLeft = 0;
                 pcp->yBottom = 0;
+
+                QWidget *w = qApp->focusWidget();
+                if(w) {
+                    QRect r = w->inputMethodQuery(Qt::ImMicroFocus).toRect();
+
+                    // The ime window positions are based on the WinId with active focus.
+                    QWidget *imeWnd = QWidget::find(WinQueryFocus(HWND_DESKTOP));
+                    if (imeWnd) {
+                        QPoint pt (r.bottomLeft());
+                        pt = w->mapToGlobal(pt);
+                        pt = imeWnd->mapFromGlobal(pt);
+
+                        pcp->xLeft = pt.x();
+                        pcp->xRight = pt.x() + r.width();
+                        // invert Y
+                        // bottom is exclusive and top is inclusive on Qt
+                        // bottom is inclusive and top is exclusive on OS/2
+                        pcp->yBottom = imeWnd->height() - pt.y();
+                        pcp->yTop = pcp->yBottom + r.height();
+                    }
+                }
+
                 return (MRESULT)QCP_CONVERT;
             }