refactor BmpWindow (frmpage) to use RenderContext
refactor BmpWindow (frmpage) to use RenderContext

Change-Id: Ia2e946b272c587cbbdfdbc0935204c5854aa2a41

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core