Programming Flowcharts
65
4
4
4
4
4
4
4
4
4
Passthru with Overlays (cont.)
Continued from previous page.
Create a surface for each
overlay with
OlFgCreateSurface.
Get a surface DC with
OlFgGetSurfaceDC.
Draw an image on the surface
with standard GDI functions.
Release the surface DC with
OlFgReleaseSurfaceDC.
Scale passthru image with
OlFgSetPassthruScaling.
Go to the next page.
The default is 480 for 60 Hz and 576
for 50 Hz.
Change
contents of a
surface?
Yes
No
Erase the contents of a surface
with OlFgEraseSurface.
Create
another
overlay?
Yes
No
Summary of Contents for 18729
Page 2: ...DT3120 UM 18109 E User s Manual ...
Page 5: ......
Page 9: ...Contents viii ...
Page 17: ...About this Manual xvi ...
Page 18: ...1 1 Overview Features 2 Supported Software 3 ...
Page 45: ...Chapter 2 28 ...
Page 95: ...Chapter 4 78 ...
Page 106: ...89 A Specifications ...
Page 109: ...Appendix A 92 ...