- Move imageArea code into canvasWindow.
- Delete imgarea.cpp, imgarea.h, and imageArea.
- Add CCanvasWindow::ImageToCanvas and CCanvasWindow::CanvasToImage to convert the coordinates.
- Realize drawing of resizing image area.
CORE-18867
- Add DoCreate methods to CFullscreenWindow, CMiniatureWindow, and CMainWindow classes.
- Do encapsulation around mainWindow and _tWinMain.
- Add GetOpenFileName, GetSaveFileName, and ChooseColor helper methods to CMainWindow class.
- Move some code in WinMain into CMainWindow::OnCreate.
- Delay creation of CFullscreenWindow and CMiniatureWindow.
- Extend ATL CImage class as CImageDx in newly-created atlimagedx.h of mspaint.
CORE-18867
Reduce window controls and integrate to the canvas window.
- The sizeboxes are absorbed by canvasWindow.
- class CSizeboxWindow is deleted.
- Add enum CANVAS_HITTEST.
- Add getSizeBoxRect, getSizeBoxHitTest, and drawSizeBoxes helper functions in sizebox.cpp.
CORE-18867
