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win32SDK的hello,world程序(二)

2024-07-14 11:21:31   219人阅读

接上篇，原生的控件都不太好看，所以决定自己画一个，稍微处理下消息就能用了。不过，美化这东西是需要天赋的。即使技术再好，没有对UI布局调整和良好的审美能力，做出来的东西还是很挫。

 

主要把消息逻辑和画的过程写出来：

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){    static bool b;    switch (message)                  /* handle the messages */    {        case WM_CREATE:            b=false;            break;        case WM_PAINT:            //DrawBackground(hwnd);            DrawButton(hwnd, RGB(24, 82, 93));            break;        case WM_LBUTTONDOWN:            {                UINT cx=LOWORD(lParam);                UINT cy=HIWORD(lParam);                if(cx>=10 && cx<=100){                        if(cy>=10 && cy<=50){                            DrawButton(hwnd, RGB(24, 82, 93));b=false;                            break;                        }                }            }            break;        case WM_LBUTTONUP:            {                UINT cx=LOWORD(lParam);                UINT cy=HIWORD(lParam);                if(cx>=10 && cx<=100){                        if(cy>=10 && cy<=50){                            DrawButton(hwnd, RGB(200, 82, 93));b=true;                            MessageBox(hwnd, "CAUTION: YOU JUST CLICKED ONE CUSTOMER-BUTTON", "", MB_ICONINFORMATION);                            break;                        }                }            }            break;        case WM_MOUSEMOVE:            {                UINT cx=LOWORD(lParam);                UINT cy=HIWORD(lParam);                if(cx>=10 && cx<=100){                    if(cy>=10 && cy<=50){                        if(!b){DrawButton(hwnd, RGB(200, 82, 93));b=true;}                        break;                    }                }                if(b){DrawButton(hwnd, RGB(24, 82, 93));b=false;}            }            break;        case WM_DESTROY:            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */            break;        default:                      /* for messages that we don‘t deal with */            return DefWindowProc (hwnd, message, wParam, lParam);    }    return 0;}

DrawButton的部分：

void DrawPng(HWND hwnd){    PAINTSTRUCT ps;    BeginPaint(hwnd, &ps);    Gdiplus::GpGraphics *graphics;    Gdiplus::GpImage *image;    WCHAR file[256]={L"D:\\alert.png"};    Gdiplus::DllExports::GdipCreateFromHDC(GetDC(hwnd), &graphics);    Gdiplus::DllExports::GdipLoadImageFromFile(file, &image);    Gdiplus::DllExports::GdipDrawImageRect(graphics, image, 66, 12, 32, 32);    Gdiplus::DllExports::GdipDisposeImage(image);    Gdiplus::DllExports::GdipDeleteGraphics(graphics);    EndPaint(hwnd, &ps);}void DrawButton(HWND hwnd, COLORREF rgb){    PAINTSTRUCT ps;    HDC hdc;    HRGN hrgn;    HBRUSH hbrush;    HFONT of, nf;    LOGFONT lf;    TCHAR fn[32]=_T("Couriew New");    RECT rect={10,10,100,50};    BeginPaint(hwnd, &ps);    hdc=GetDC(hwnd);    hrgn=CreateRoundRectRgn(10, 10, 100, 50, 10, 10);    hbrush=CreateSolidBrush(rgb);//RGB(24, 82, 93)    FillRgn(hdc, hrgn, hbrush);    FrameRgn(hdc, hrgn, (HBRUSH)GetStockObject(GRAY_BRUSH), 1, 1);    SetBkMode(hdc, TRANSPARENT);    SetTextColor(hdc, RGB(255, 255, 255));    of=(HFONT)SendMessage(hwnd, WM_GETFONT, (WPARAM)NULL, (LPARAM)NULL);    ZeroMemory(&lf, sizeof(lf));    GetObject(of, sizeof(lf), &lf);    MoveMemory(&lf.lfFaceName, fn, 32);    nf=(HFONT)CreateFontIndirect(&lf);    SelectObject(hdc, nf);    DrawText(hdc, "    Button", -1, &rect, DT_SINGLELINE|DT_LEFT|DT_VCENTER);    SelectObject(hdc, of);    DeleteObject(nf);    DeleteObject(hbrush);    DeleteObject(hrgn);    ReleaseDC(hwnd, hdc);    EndPaint(hwnd, &ps);    DrawPng(hwnd);}

 

贴张图：

                                 

 


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