- Add WC_ZOOM window class and
use it for zooming.
- Add ZoomWnd_OnDraw function
and use it in ZoomWnd_OnPaint.
- Use memory bitmap to reduce flickering.
- Make rendering pixel-perfect.
CORE-19220
Improve code flexibility.
- Remove g_fnPrevProc, g_hDispWnd, g_hToolBar, and g_Anime global variables.
- Declare PREVIEW_DATA structure and use it.
- Encapsulate preview window by using user data.
CORE-19358
- Move Anime_GetFrameDelay and Anime_Step.
- Remove one parameter from ImageView_SaveSettings.
- Rename some preview-window functions as "Preview_...".
- Rename ImageView_CreateWindow as ImageView_Main.
- Use lParam of WM_CREATE.
CORE-19358