ToolBar自绘

[wangcftxz]

求一个ToolBar的自绘Demo

发现ToolBar有四个Event可以自绘
OnAdvancedCustomDraw
OnAdvanceCustomDrawButton
OnCustomDraw
OnCustomDrawButton

在网上找了半天,找到想要的东西。自己又摸索了半天，还是不会。

杯具，一天过去了，没有收获。发帖求大神给一段代码，小弟感激不尽。

[wangcftxz]

楼上要表达的是什么意思？看不懂啊

[ccrun.com]

我来了！！！
先设置一下ToolBar:

//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
    ToolBar1->Flat = true;
    ToolBar1->List = true;
    ToolBar1->ShowCaptions = true;
}

然后在ToolBar的OnCustomDrawButton事件事绘制按钮：

void __fastcall TForm1::ToolBar1CustomDrawButton(TToolBar *Sender,
      TToolButton *Button, TCustomDrawState State, bool &DefaultDraw)
{
	// 取消缺省的绘制
	DefaultDraw = false;

	TToolBar *tlb = ((TToolBar*)Sender);

	// 当前按钮的边框
	TRect rctItemBorder = Button->BoundsRect;

	// 当前按钮的内部区域
	TRect rctItem(rctItemBorder.Left + 1, rctItemBorder.Top + 1,
		    rctItemBorder.Right - 1, rctItemBorder.Bottom - 1);

	if (Sender->Enabled && (State.Contains(cdsHot) || Button->Down)) // 处理热点信息
	{
		// 选中项的文字颜色
		tlb->Canvas->Font->Color = clRed;

		// 选中项的画刷和画笔颜色
		tlb->Canvas->Brush->Color = (TColor)0x00EFD3C6;
		tlb->Canvas->Pen->Color = clBlue;

		// 绘制选中项的背景
		tlb->Canvas->FillRect(rctItem);
		tlb->Canvas->Rectangle(rctItemBorder);

	}
	else
	{
		// 普通按钮的文字颜色
		tlb->Canvas->Font->Color = Button->Enabled && Sender->Enabled ?
				clBlack: clGray;
	}

	// 文本字体
	tlb->Canvas->Font->Name = "宋体";
	tlb->Canvas->Font->Size = 9;

	// 背景透明
	::SetBkMode(tlb->Canvas->Handle, TRANSPARENT);

	// 绘出标题
	if (tlb->ShowCaptions)
	{
		TRect rct;
		if (tlb->List) // 横排方式
		{
			rct = TRect(Button->Left + (tlb->Images? tlb->Images->Width + 4: 2),
				Button->Top + 2, rctItem.Right, rctItem.Bottom);

			::DrawTextA(tlb->Canvas->Handle, AnsiString(Button->Caption).c_str(),
					Button->Caption.Length(), &rct, DT_SINGLELINE | DT_VCENTER | DT_TOP);
		}
		else // 竖排
		{
			rct = TRect(Button->Left + 2,
    				Button->Top + (tlb->Images?
                    tlb->Images->Height + 4 : 2), rctItem.Right, rctItem.Bottom);

			::DrawTextA(tlb->Canvas->Handle,
                    AnsiString(Button->Caption).c_str(),
					Button->Caption.Length(), &rct, DT_SINGLELINE | DT_CENTER | DT_LEFT);
		}
	}
	// 绘出按钮的图标
	if (tlb->DisabledImages && (!Button->Enabled || !Sender->Enabled))
	{
		tlb->DisabledImages->Draw(tlb->Canvas,
			tlb->List ? Button->Left + 2:
                    Button->Left + (Button->Width - tlb->DisabledImages->Width) / 2,
			tlb->List?
                    Button->Top + (Button->Height - tlb->DisabledImages->Height) / 2:
		        	Button->Top + 2, Button->ImageIndex, true);
	}
	else
		if (tlb->Images)
		{
			tlb->Images->Draw(tlb->Canvas,
				tlb->List ? Button->Left + 2:
                        Button->Left + (Button->Width - tlb->Images->Width) / 2,
				tlb->List?
                        Button->Top + (Button->Height - tlb->Images->Height)/ 2:
        				Button->Top + 2, Button->ImageIndex, true);
		}
}

[ccrun.com]

发一张效果图：


BTW：以上代码是在C++Builder6中编译测试的。

[wangcftxz]

妖哥一如既往的给力 膜拜

[zhoh1234]