L_VOID LBitmapWindow::SetVertLineStep(nVLineStep)
Sets the vertical scrolling line step.
The vertical scrolling line step.
None.
This is the amount by which the image will be scrolled when the user clicks the scrollbar's scroll-line button.
The default value is 5 pixels.
Win32, x64.
For an example, refer to LBitmapWindow::Repaint.
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