acquireDynamicShapes acquireFrontDoc acquireFrontDoc addImageShape addImageShape addRef addShapesForTest backDoc backShapes canRedo canUndo clear clearCachedData displayToModel doContextAction exportSVGPath exportSVGPath2 findShapeByImageID findShapeByTag freeContent fromHandle getBoundingBox getBoundingBox getBoundingBox getChangeCount getCommand getCommand getContent getContent getContent getContent getContext getDisplayExtent getDisplayExtent getDrawCount getFrameFlags getFrameIndex getFrameTick getHandlePoint getImageSize getModelBox getModelBox getPlayingTick getRecordTick getRedoCount getRedoIndex getSelectedHandle getSelectedShapeCount getSelectedShapeID getSelectedShapeIDs getSelectedShapeType getShapeCount getShapeCount getShapeFlag getUnlockedShapeCount getViewModelBox getVisibleShapeCount hasImageShape importSVGPath isCommand isDrawing isDrawingCommand isPaused isPlaying isPressDragging isRecording isStopping isUndoLoading isUndoRecording isZooming loadFromFile loadShapes release releaseDoc releaseShapes saveShapes saveShapes saveToFile saveToFile setCommand setContent setContext setContext setContextEditing setSelectedShapeIDs setShapeFlag stopDrawing switchCommand toHandle traverseImageShapes viewAdapterHandle viewDataHandle zoomPan zoomToExtent zoomToInitial zoomToModel ~MgCoreView

getContent() [1/4] virtual const char* MgCoreView::getContent ( long  doc ) pure virtual 得到图形的JSON内容，需要调用 freeContent() 在 GiCoreView 内被实现.