首次用Code::Blocks写Win32GUI程序，关于GDI+的引用摸索了半天。SDK写GUI比较累人，以后还是考虑Qt或者其他方式。
代码：
/** *code by lichmama from cnblogs.com *@platform: code::blocks 13.12/windows xp */ #if defined(UNICODE) && !defined(_UNICODE) #define _UNICODE #elif defined(_UNICODE) && !defined(UNICODE) #define UNICODE #endif #include <tchar.h> #include <windows.h> #include ".gdiplus.h" #define BUTTON 101 #define WS_EX_LAYERED 0x80000 #define GWL_EXSTYLE (-20) #define LWA_ALPHA 2 #define SC_DRAGMOVE 0xF012 /* Declare Windows procedure */ LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); typedef BOOL (WINAPI *PFSLWA) (HWND hWnd, COLORREF cr, BYTE bAlpha, DWORD dwFlags); PFSLWA SetLayeredWindowAttributes; /* Make the class name into a global variable */ TCHAR szClassName[ ] = _T("CodeBlocksWindowsApp"); int WINAPI WinMain (HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nCmdShow) { HWND hwnd; /* This is the handle for our window */ MSG messages; /* Here messages to the application are saved */ WNDCLASSEX wincl; /* Data structure for the windowclass */ /* The Window structure */ wincl.hInstance = hThisInstance; wincl.lpszClassName = szClassName; wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */ wincl.style = CS_DBLCLKS; /* Catch double-clicks */ wincl.cbSize = sizeof (WNDCLASSEX); /* Use default icon and mouse-pointer */ wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION); wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION); wincl.hCursor = LoadCursor (NULL, IDC_ARROW); wincl.lpszMenuName = NULL; /* No menu */ wincl.cbClsExtra = 0; /* No extra bytes after the window class */ wincl.cbWndExtra = 0; /* structure or the window instance */ /* Use Windows's default colour as the background of the window */ wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND; /* Register the window class, and if it fails quit the program */ if (!RegisterClassEx (&wincl)) return 0; /* The class is registered, let's create the program*/ hwnd = CreateWindowEx ( 0, /* Extended possibilites for variation */ szClassName, /* Classname */ NULL, //_T("Code::Blocks Template Windows App"), /* Title Text */ WS_POPUP, //WS_OVERLAPPEDWINDOW, /* default window */ 300, /* Windows decides the position */ 100, /* where the window ends up on the screen */ 770, /* The programs width */ 512, /* and height in pixels */ HWND_DESKTOP, /* The window is a child-window to desktop */ NULL, /* No menu */ hThisInstance, /* Program Instance handler */ NULL /* No Window Creation data */ ); /* Make the window visible on the screen */ ULONG_PTR gdiplusToken; Gdiplus::GdiplusStartupInput gdiplusInput; GdiplusStartup(&gdiplusToken, &gdiplusInput, NULL); ShowWindow(hwnd, nCmdShow); /* Run the message loop. It will run until GetMessage() returns 0 */ while (GetMessage (&messages, NULL, 0, 0)) { /* Translate virtual-key messages into character messages */ TranslateMessage(&messages); /* Send message to WindowProcedure */ DispatchMessage(&messages); } /* The program return-value is 0 - The value that PostQuitMessage() gave */ Gdiplus::GdiplusShutdown(gdiplusToken); return messages.wParam; } /* This function is called by the Windows function DispatchMessage() */ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) /* handle the messages */ { case WM_CREATE: //SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_CAPTION); //SetWindowPos(hwnd, NULL, 0, 0, 0, 0, SWP_NOSIZE|SWP_NOZORDER|SWP_DRAWFRAME); SetWindowRgn(hwnd, CreateRoundRectRgn(0,0,770,512,15,15), TRUE); SetWindowLong(hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE)|WS_EX_LAYERED); { HMODULE hmod; hmod=(HMODULE)LoadLibrary("user32.dll"); SetLayeredWindowAttributes=(PFSLWA)GetProcAddress(hmod, "SetLayeredWindowAttributes"); SetLayeredWindowAttributes(hwnd, 0, 220, LWA_ALPHA); CloseHandle(hmod); } break; case WM_PAINT: { PAINTSTRUCT ps; HBITMAP hbmp; BITMAP bmp; HDC hmemdc; HDC hdc; BeginPaint(hwnd, &ps); hdc=GetWindowDC(hwnd); hbmp=(HBITMAP)LoadImage(NULL, "D:\12.bmp", IMAGE_BITMAP, 0, 0, LR_DEFAULTSIZE|LR_LOADFROMFILE); GetObject(hbmp, sizeof(bmp), &bmp); hmemdc=CreateCompatibleDC(NULL); SelectObject(hmemdc, hbmp); BitBlt(hdc, 0, 0, bmp.bmWidth, bmp.bmHeight, hmemdc, 0, 0, SRCCOPY); DeleteObject(hbmp); DeleteDC(hmemdc); ReleaseDC(hwnd, hdc); EndPaint(hwnd, &ps); } { PAINTSTRUCT ps; HDC hdc; UINT width; UINT height; WCHAR file[]={L"D:\3.png"}; BeginPaint(hwnd, &ps); hdc=GetWindowDC(hwnd); Gdiplus::GpImage *image; Gdiplus::GpGraphics *graphics; Gdiplus::DllExports::GdipLoadImageFromFile(file, &image); Gdiplus::DllExports::GdipCreateFromHDC(hdc, &graphics); Gdiplus::DllExports::GdipGetImageWidth(image, &width); Gdiplus::DllExports::GdipGetImageHeight(image, &height); Gdiplus::DllExports::GdipDrawImageRect(graphics, image, 700, 10, width*0.1, height*0.1); Gdiplus::DllExports::GdipDisposeImage(image); Gdiplus::DllExports::GdipDeleteGraphics(graphics); ReleaseDC(hwnd, hdc); EndPaint(hwnd, &ps); } break; case WM_LBUTTONDOWN: { //(700,10)-(751.61) UINT cx=LOWORD(lParam); UINT cy=HIWORD(lParam); if(cx>=700 && cx<=751){ if(cy>=10 && cy<=61){ if(MessageBox(hwnd, "你希望退出程序么?", "MessageBox", MB_YESNO)==IDYES)DestroyWindow(hwnd); break; } } } SendMessage(hwnd,WM_SYSCOMMAND,SC_DRAGMOVE,0); 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; }
贴张图：
