Limit scrolling of the edit control to the last line of text.
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@ -2783,6 +2783,8 @@ static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
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{
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INT nyoff;
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INT x_offset_in_pixels;
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INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
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es->line_height;
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if (es->style & ES_MULTILINE)
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{
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@ -2799,8 +2801,8 @@ static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
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if (dx > es->text_width - x_offset_in_pixels)
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dx = es->text_width - x_offset_in_pixels;
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nyoff = max(0, es->y_offset + dy);
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if (nyoff >= es->line_count)
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nyoff = es->line_count - 1;
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if (nyoff >= es->line_count - lines_per_page)
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nyoff = es->line_count - lines_per_page;
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dy = (es->y_offset - nyoff) * es->line_height;
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if (dx || dy) {
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RECT rc1;
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