ScreenDPI
Viewer interaction
Description
Screen DPI used to map PDF points to pixels: at 100 percent zoom one PDF point becomes ScreenDPI/72 pixels
The value starts at 96, auto-detects from the host monitor when the control window is created and updates on WM_DPICHANGED; assigning a different value clears the bitmap cache and rebuilds the layout, which makes explicit assignment useful for headless render-to-image tests, while values of 0 or below fall back to 96
Syntax
Delphi
Property ScreenDPI: Integer Read FScreenDPI Write SetScreenDPI;