c++ builder listview 重绘

最新推荐文章于 2020-09-17 14:52:07 发布

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最新推荐文章于 2020-09-17 14:52:07 发布 · 1.8k 阅读

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CC 4.0 BY-SA版权

本文详细介绍了在C++ Builder应用中如何实现ListView组件的重绘操作，主要探讨了在构造函数中设置和调整ListView的显示效果，以达到自定义视觉效果的目的。

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1 在构造函数中

	ListView1->OwnerDraw = true;
	ListView1->StateImages= ImageList1;
	ListView1->OnDrawItem =(TLVDrawItemEvent)&CrnDrawListViewItem;

2 响应函数

void __fastcall TfmMipian:: CrnDrawListViewItem(TCustomListView *Sender,TListItem *Item, TRect &Rect, TOwnerDrawState State)
{
	TListView *lv = (TListView *)Sender;
	// Rect
	TRect rct(Rect.Left + 1, Rect.Top, Rect.Width() - 1, Rect.Bottom);
	// Fill background
	if(State.Contains(odFocused) || State.Contains(odSelected))
	{
		// With focus
		lv->Canvas->Brush->Color = MYCOLOR_BACK;
		lv->Canvas->FillRect(rct);
		lv->Canvas->Pen->Color = MYCOLOR_BORDER;
		lv->Canvas->Rectangle(rct);
	}
	else
	{
		lv->Canvas->Brush->Color = lv->Color;
		lv->Canvas->FillRect(Rect);
	}
	int nLeftOffset(0);

   if(lv->Checkboxes)
	{
		lv->Canvas->Pen->Color = clBlack;
		l