win32自绘按钮，使用GDI+（三）

解决前面的问题。实现鼠标移动进入到按钮的特效。

效果是这样的

鼠标移到按钮上，改变按钮的颜色（这里用的是直接换贴在按钮上的图片）

程序运行

鼠标进入按钮

代码

 #ifndef ULONG_PTR
 //#define ULONG_PTR unsigned long*
 #endif
 #include <windows.h>
 #define   _WIN32_WINNT   0x0500
 #include<Winuser.h >
 //#include <objidl.h>
 #include<tchar.h>
 #include<stdlib.h>
 #include <gdiplus.h>
 #include"resource.h"
 using namespace Gdiplus;
 #pragma comment (lib,"Gdiplus.lib")
 #define ID_BUTTON1 1
 #define ID_BUTTON2 2
 #define ID_MAINPAGE 3
 //
 #define IDM_MAINPAGE 10
 #define IDM_REFRESH 11

 HINSTANCE hInst;
 HMENU hMenu1;
 WNDPROC oldBtnProc;
 BOOL btnEntry=FALSE;
 void DrawRegn(HDC hdc)
 {

 }

 void DrawIco(HDC hdc)
 {
     Graphics graphics(hdc);
     Pen pen1(Color(,,,),);
     Pen pen2(Color(,,,),);
     Pen pen3(Color(,,,),);
     graphics.DrawEllipse(&pen1,,,,);
     graphics.DrawEllipse(&pen2,,,,);
     graphics.DrawEllipse(&pen3,,,,);//calc
     //text
     HFONT hOldFont;
     HFONT hFont = CreateFont(,,,,,,,,OEM_CHARSET,OUT_DEFAULT_PRECIS,
                       CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,DEFAULT_PITCH |FF_SCRIPT,"script" );
     hOldFont = (HFONT)SelectObject(hdc,hFont);
     SetTextColor(hdc,RGB(,,));//
     SetBkMode(hdc,TRANSPARENT);
     TextOut(hdc,,,"www.cnblogs.com",sizeof("www.cnblogs.com")-);//calc
     SelectObject(hdc,hOldFont);
     DeleteObject(hFont);
 }
 void LoadBkImge(HDC hdc)
 {
     Graphics graphics(hdc);
    Image image(L"pic1.png");
    graphics.DrawImage(&image,,);
 }

 void FillRec(HDC hdc,Rect myRect,Color* colors,float *positions,int i)
 {
     Graphics graphics(hdc);
    //多彩渐变色
     LinearGradientBrush myLinearGradientBrush(
        myRect,
        Color(,,,),
        Color(,,,),
        LinearGradientModeVertical
        );//LinearGradientModeHorizontal*/

       myLinearGradientBrush.SetInterpolationColors(colors, positions, i);
       graphics.FillRectangle(&myLinearGradientBrush,myRect);
 } 

 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 LRESULT CALLBACK BtnProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam);

 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR, INT iCmdShow)
 {
    HWND                hWnd;
    MSG                 msg;
    WNDCLASS            wndClass;
    GdiplusStartupInput gdiplusStartupInput;
    ULONG_PTR           gdiplusToken;
    hInst=hInstance;

    // Initialize GDI+.
    GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL); 

    wndClass.style          = CS_HREDRAW | CS_VREDRAW|DS_CENTER;
    wndClass.lpfnWndProc    = WndProc;
    wndClass.cbClsExtra     = ;
    wndClass.cbWndExtra     = ;
    wndClass.hInstance      = hInstance;
    wndClass.hIcon          = LoadIcon(NULL, IDI_APPLICATION);
    wndClass.hCursor        = LoadCursor(NULL, IDC_ARROW);
    wndClass.hbrBackground  = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wndClass.lpszMenuName   = NULL;
    wndClass.lpszClassName  = TEXT("Gdiplustest"); 

    RegisterClass(&wndClass);
    hWnd = CreateWindow(
       TEXT("Gdiplustest"),
       TEXT("Gdiplustest"),
       WS_OVERLAPPED|WS_POPUP,
       CW_USEDEFAULT,
       CW_USEDEFAULT,
       ,
       ,
       NULL,
       NULL,
       hInstance,
       NULL);                 

    ShowWindow(hWnd, iCmdShow);
    UpdateWindow(hWnd); 

    while(GetMessage(&msg, NULL, , ))
    {
       TranslateMessage(&msg);
       DispatchMessage(&msg);
    } 

    GdiplusShutdown(gdiplusToken);
    return msg.wParam;
 }  

 LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
    WPARAM wParam, LPARAM lParam)
 {
    static HDC   hdc;
    static HWND hButton1,hButton2,hMainPage;
    PAINTSTRUCT  ps;
    LPDRAWITEMSTRUCT pdis;

    switch(message)
    {
    case WM_CREATE:
        {
            hdc=GetDC(hWnd);
            //窗口居中显示
            int scrWidth,scrHeight;
            RECT rect;
            scrWidth=GetSystemMetrics(SM_CXSCREEN);
            scrHeight=GetSystemMetrics(SM_CYSCREEN);
            GetWindowRect(hWnd,&rect);
            rect.left=(scrWidth-rect.right)/;
            rect.top=(scrHeight-rect.bottom)/;
            SetWindowPos(hWnd,HWND_TOP,rect.left,rect.top,rect.right,rect.bottom,SWP_SHOWWINDOW);
            hButton1=CreateWindow("button","",WS_CHILD|WS_VISIBLE|BS_OWNERDRAW,,,,,hWnd,(HMENU)ID_BUTTON1,hInst,NULL);
            hButton2=CreateWindow("button","",WS_CHILD|WS_VISIBLE|BS_OWNERDRAW,,,,,hWnd,(HMENU)ID_BUTTON2,hInst,NULL);
            //
            hMainPage=CreateWindow("button","",WS_CHILD|WS_VISIBLE|BS_OWNERDRAW,,,,,hWnd,(HMENU)ID_MAINPAGE,hInst,NULL);
            oldBtnProc=(WNDPROC)SetWindowLong(hMainPage,GWL_WNDPROC,(long)BtnProc);
            //
            return ;
        }
    case WM_SIZE:
        return ;
    case WM_PAINT:
        {
         hdc = BeginPaint(hWnd, &ps); 

         Graphics graphics(hdc);
         //LoadBkImge(hdc);
         //标题栏
         Rect myRect(,,,);
         Color colors[]={
         Color(,,),
         Color(,,),
         Color(,,),
         Color(,,),
         Color(,,),
         Color(,,)
         };
         float positions[]={
         0.0f,
         0.2f,
         0.4f,
         0.6f,
         0.8f,
         1.0f
         };
         FillRec(hdc,myRect,colors,positions,);
         //菜单栏
         Rect myRect1(,,,);
         Color colors1[]={
         Color(,,),
         Color(,,),
         Color(,,),
         Color(,,),
         Color(,,),
         Color(,,)
         };
         float positions1[]={
         0.0f,
         0.2f,
         0.4f,
         0.6f,
         0.8f,
         1.0f
         };
         FillRec(hdc,myRect1,colors1,positions1,);
         /*SolidBrush brush11(Color(255,240,240,240));
         graphics.FillRectangle(&brush11,myRect1);*/

         Pen pen1(Color(,,,));
         Pen pen2(Color(,,,));
         Pen pen3(Color(,,,));
         Pen pen4(Color(,,,));
         {
         graphics.DrawLine(&pen1,,,,);
         graphics.DrawLine(&pen2,,,,);
         graphics.DrawLine(&pen4,,,,);
         }
         {
         graphics.DrawLine(&pen1,,,,);
         graphics.DrawLine(&pen2,,,,);
         graphics.DrawLine(&pen1,,,,);
         }
         {
         graphics.DrawLine(&pen1,,,,);
         graphics.DrawLine(&pen2,,,,);
         }
         {
         graphics.DrawLine(&pen1,,,,);
         graphics.DrawLine(&pen2,,,,);
         graphics.DrawLine(&pen1,,,,);
         }
         //菜单栏
         graphics.DrawLine(&pen1,,,,);
         graphics.DrawLine(&pen3,,,,);

         DrawIco(hdc);
       EndPaint(hWnd, &ps);
       return ;
        }
     case WM_CTLCOLORBTN:
         {
             HBRUSH hBrush;
             //hBrush = CreateSolidBrush(RGB(255, 0, 0));
             hBrush=(HBRUSH)GetStockObject(NULL_BRUSH);
             return (long)hBrush;
         }

    case WM_COMMAND:
        {
            switch(wParam)
             {
            case ID_BUTTON1:
                {
                    ShowWindow(hWnd,SW_SHOWMINIMIZED);
                    break;
                }
            case ID_BUTTON2:
                 {
                     PostQuitMessage();
                     break;
                 }
            case ID_MAINPAGE:
                {
                     POINT pt;
                     pt.x=;
                     pt.y=;
                    break;
                }
                 //
            }

        return ;

        }

    case WM_DRAWITEM:
        {

             pdis=(LPDRAWITEMSTRUCT)lParam;
             //SetBkMode(pdis->hDC, TRANSPARENT );
             //FillRect(pdis->hDC,&pdis->rcItem,(HBRUSH)GetStockObject(NULL));
             //FrameRect(pdis->hDC,&pdis->rcItem,(HBRUSH)GetStockObject(BLACK_BRUSH));

             int cx=pdis->rcItem.right-pdis->rcItem.bottom;
             int cy=pdis->rcItem.bottom-pdis->rcItem.top;

             switch(pdis->CtlID)
             {

                 case ID_BUTTON1:
                 {
                         Graphics graphics(pdis->hDC);
                         Rect rectt(,,,);
                         Color colors[]={
                         Color(,,),
                         Color(,,),
                         Color(,,),
                         Color(,,),
                         };
                         float positions[]={
                         0.0f,
                         0.333333f,
                         0.666666f,
                         1.0f
                         };
                         //FillRec(pdis->hDC,rectt,colors,positions,4);
                         {
                         SolidBrush  m_pBrush(Color(,,,));
                         PointF point1(3.0f, 6.5f);
                         PointF point2(12.0f, 6.5f);
                         PointF point3(12.0f, 8.50f);
                         PointF point4(3.0f, 8.50f);
                         PointF points[] = {point1, point2, point3,point4};
                         graphics.FillPolygon(&m_pBrush, points, , FillModeAlternate);
                         }

                         break;
                 }

                 case ID_BUTTON2:
                 {
                     Graphics graphics(pdis->hDC);
                     Rect rectt(,,,);
                     Color colors[]={
                     Color(,,),
                     Color(,,),
                     Color(,,),
                     Color(,,),
                     };
                     float positions[]={
                         0.0f,
                         0.33333f,
                         0.66633f,
                         1.0f
                     };
                     //FillRec(pdis->hDC,rectt,colors,positions,4);

                     SolidBrush  m_pBrush(Color(,,,));
                     //
                     PointF point1(2.0f, 4.0f);
                     PointF point2(4.0f, 2.0f);
                     PointF point3(13.0f, 11.0f);
                     PointF point4(11.0f, 13.0f);
                     PointF points[] = {point1, point2, point3,point4};
                     graphics.FillPolygon(&m_pBrush, points, , FillModeAlternate);
                     //
                     PointF point5(13.0f, 4.0f);
                     PointF point6(11.0f, 2.0f);
                     PointF point7(2.0f, 11.0f);
                     PointF point8(4.0f, 13.0f);

                     PointF points2[] = {point5, point6, point7,point8    };
                     graphics.FillPolygon(&m_pBrush, points2, , FillModeAlternate);
                     break;
                 }
                 case ID_MAINPAGE:
                 {
                     if(btnEntry==TRUE)
                     {
                         //bitmap2.png
                         Graphics graphics( pdis->hDC);
                         Image image(L"bitmap2.png", FALSE);
                         graphics.DrawImage(&image, ,);
                     }
                     else
                     {
                         Graphics graphics( pdis->hDC);
                         Image image(L"bitmap.png", FALSE);
                         graphics.DrawImage(&image, ,);

                     }

                     //TransparentBitmap(pdis->hDC,hBitmap1,-5,-5,20,20,RGB(255,255,255));
                     //ReleaseDC(
                     break;
                 }

             }
             //

           if (pdis->itemState & ODS_SELECTED)
           {
               Graphics graphics(hdc);
               SolidBrush brush2(Color(,,,));
               //graphics.FillPolygon(&brush2,pointt,7,FillModeAlternate);

                //InvertRect (pdis->hDC, &pdis->rcItem) ;
           }              

               //  Draw a focus rectangle if the button has the focus

           if (pdis->itemState & ODS_FOCUS)
           {
                pdis->rcItem.left   += cx /  ;
                pdis->rcItem.top    += cy /  ;
                pdis->rcItem.right  -= cx /  ;
                pdis->rcItem.bottom -= cy /  ;

                DrawFocusRect (pdis->hDC, &pdis->rcItem) ;
           }
           return  ;
        }

    case WM_DESTROY:
       PostQuitMessage();
       return ;
    case WM_LBUTTONDOWN:
       SendMessage(hWnd,WM_NCLBUTTONDOWN,HTCAPTION,);
       return ;
    default:
       return DefWindowProc(hWnd, message, wParam, lParam);
    }
 }

 LRESULT CALLBACK BtnProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
 {
     switch(uMsg)
     {
     case WM_MOUSEMOVE:
         {
             if(btnEntry == FALSE)
             {
                 TRACKMOUSEEVENT tme;
                 tme.cbSize = sizeof(TRACKMOUSEEVENT);
                 tme.dwFlags = TME_HOVER | TME_LEAVE;
                 tme.dwHoverTime = ;
                 tme.hwndTrack = hwnd;
                 TrackMouseEvent(&tme);
             }
             break;
         }
     case WM_MOUSEHOVER:
         {
             btnEntry = TRUE;
             InvalidateRect(hwnd,NULL,TRUE);
             UpdateWindow(hwnd);
             break;
         }
     case WM_MOUSELEAVE:
         {
             btnEntry = FALSE;
             InvalidateRect(hwnd,NULL,TRUE);
             UpdateWindow(hwnd);
             break;
         }
     default:return CallWindowProc(oldBtnProc,hwnd,uMsg,wParam,lParam);
     }
 }
  

程序的瑕疵比较多的，但至少实现了功能，以后私底下慢慢完善吧。再封装一下。并且，关于GDI+和自绘按钮就学到这。以后写程序的时候，这个就是起点了，需要实现其他的效果，再研究