duilib 自定义控件

1.主窗口

自定义FramWnd继承WindowImplBase,

重写CreateControl,HandleMessage.

组合CPaintManagerUI.

2.自定义控件

自定义mycontrol 继承CControlUI

重写DoEvent,DoPaint,SetPos.

main.cpp

#include "FramWnd.h"

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE /*hPrevInstance*/, LPSTR /*lpCmdLine*/, int nCmdShow)
{
    CPaintManagerUI::SetInstance(hInstance);
    CPaintManagerUI::SetResourcePath(CPaintManagerUI::GetInstancePath());

    FramWnd* pFrame = new FramWnd();
    if (pFrame == NULL) return 0;
    pFrame->Create(NULL, _T("测试"), UI_WNDSTYLE_FRAME, WS_EX_WINDOWEDGE);
    pFrame->ShowWindow(true);
    CPaintManagerUI::MessageLoop();
    return 0;
}

FramWnd.h

#pragma once

#include "UIlib.h"
using namespace DuiLib;
class FramWnd :public WindowImplBase
{
public:
  FramWnd();
  virtual ~FramWnd() {}

  // 通过 CWindowWnd 继承
  virtual LPCTSTR GetWindowClassName() const override;
  UINT GetClassStyle() const override;

  LRESULT HandleMessage(UINT uMsg, WPARAM wParam, LPARAM lParam) override;

  CPaintManagerUI m_pm;

  // 通过 WindowImplBase 继承
  virtual CDuiString GetSkinFolder() override;
  virtual CDuiString GetSkinFile() override;
  virtual CControlUI* CreateControl(LPCTSTR pstrClass);
};

FramWnd.cpp

#include "FramWnd.h"
#include "mycontrol.h"

LPCTSTR FramWnd::GetWindowClassName() const
{
  return _T("FramWnd");
}


UINT FramWnd::GetClassStyle() const
{
  return UI_CLASSSTYLE_FRAME | CS_DBLCLKS; ;
}

LRESULT FramWnd::HandleMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
  if (uMsg == WM_CREATE) {
    m_pm.Init(m_hWnd);
    CDialogBuilder builder;
    CControlUI* pRoot = builder.Create(_T("WindowsProject1.xml"), 0, this, &m_pm);
    m_pm.AttachDialog(pRoot);
    m_pm.AddNotifier(this);
    return 0;
  }
  else if (uMsg == WM_DESTROY) {
    ::PostQuitMessage(0);
  }
  LRESULT lRes = 0;
  if (m_pm.MessageHandler(uMsg, wParam, lParam,lRes)) return lRes;
  return CWindowWnd::HandleMessage(uMsg, wParam, lParam);
}


CDuiString FramWnd::GetSkinFolder()
{
  return CDuiString();
}

CDuiString FramWnd::GetSkinFile()
{
  return CDuiString();
}

CControlUI* FramWnd::CreateControl(LPCTSTR pstrClass)
{
  if (_tcsicmp(pstrClass, _T("mycontrol")) == 0)
  {
    return  new mycontrol;
  }
  return NULL;
}

FramWnd::FramWnd()
{
}

mycontrol.h

#pragma once
#include "UIlib.h"
typedef struct {
  POINT startPoint; // 鼠标按下时的坐标点，
  POINT endPoint; // 鼠标释放时的坐标点，
}line;

namespace DuiLib
{
  class mycontrol :
    public CControlUI 
  {
  public:
    mycontrol(void);
    ~mycontrol(void);
    virtual void SetPos(RECT rc, bool bNeedInvalidate = true);
    bool DoPaint(HDC hDC, const RECT& rcPaint, CControlUI* pStopControl);
    virtual void DoEvent(TEventUI& event);

  private:
    POINT _startPoint; // 鼠标按下时的坐标点，
    POINT _endPoint; // 鼠标释放时的坐标点
    bool _lbtnDown; // 鼠标左键是否按下。
    std::vector<line> _lines; // 存储所有绘制的线段。
  };
}

mycontrol.cpp

#include "mycontrol.h"
#include "UILib.h"

namespace DuiLib
{
  mycontrol::mycontrol(void){}
  mycontrol::~mycontrol(void) {}
  void mycontrol::SetPos(RECT rc, bool bNeedInvalidate)
  {
    CControlUI::SetPos(rc, bNeedInvalidate);
  }

  bool mycontrol::DoPaint(HDC hDC, const RECT& rcPaint, CControlUI* pStopControl)
  {
    RECT rc = GetPos() ;
    if (IsRectEmpty(&rc)) {
      return false;
    }
    COLORREF bgColor = RGB(255, 255, 255); // 默认白色  
    HBRUSH hBrush = CreateSolidBrush(bgColor);
    if (hBrush) {
      HGDIOBJ hOldBrush = SelectObject(hDC, hBrush);
      FillRect(hDC, &rc, hBrush);
      DrawText(hDC, _T("Hello, World!"), -1, (LPRECT)&rc, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
      HPEN hPen2 = CreatePen(PS_SOLID, 1, RGB(255, 0, 0));
      SetPixel(hDC, 30, 10, RGB(255, 0, 0));
      SetPixel(hDC, _startPoint.x, _startPoint.y-3, RGB(255, 0, 0));
      SelectObject(hDC, hPen2);
      MoveToEx(hDC, 0, 0, NULL);
      LineTo(hDC, rc.right, rc.bottom);
      MoveToEx(hDC, _startPoint.x, _startPoint.y, NULL);
      LineTo(hDC, _endPoint.x, _endPoint.y);
      for (auto line:_lines)
      {
        MoveToEx(hDC, line.startPoint.x, line.startPoint.y, NULL);
        LineTo(hDC, line.endPoint.x, line.endPoint.y);
      }
      DeleteObject(hPen2);
      SelectObject(hDC, hOldBrush);
      DeleteObject(hBrush);
    }
    return false;
  }
  void mycontrol::DoEvent(TEventUI& event)
  {
    
    switch (event.Type)
    {
      case UIEVENT_MOUSEMOVE:
        if (_lbtnDown)
        {
          _endPoint = event.ptMouse;
          Invalidate();
        }
        return;
      case UIEVENT_BUTTONUP:
        _lbtnDown = false;
        line l;
        l.startPoint = _startPoint;
        l.endPoint = _endPoint;
        _lines.push_back(l);
        return;
      case UIEVENT_BUTTONDOWN:
        _lbtnDown = true;
        _startPoint = event.ptMouse;
        return;
    default:
      break;
    }

    CControlUI::DoEvent(event);
  }
}

WindowsProject1.xml

<?xml version="1.0"?>
<Window mininfo="200,360" size=" 480,320 ">
    <VerticalLayout bkcolor="#FFFF00FF">

        <mycontrol  />
    </VerticalLayout>
</Window>

效果