[WinAPI] interface color conversion

 

 

// definition of windows.h application file contains the desired data type and data structure 
#include <windows.h> 
#include <stdlib.h> 
#include <time.h> 
LRESULT CALLBACK the WndProc (the HWND, UINT, WPARAM, LPARAM); // window function description
 // --------- following initialization window class -------------- 
int WINAPI the WinMain (hInstance the hINSTANCE, the hINSTANCE hPrevInst, LPSTR the lpszCmdLine, int the nCmdShow) 
{ 
    the HWND HWND; 
    the MSG Msg; 
    the WNDCLASS WNDCLASS; 
    char , lpszClassName [] = " window " ;      // window class name 
    char lpszTitle [] = " My_Windows " ;    // window title name 

    // window class definition 
    wndclass.style = CS_HREDRAW | CS_VREDRAW;                   // window type is the default type 
    wndclass.lpfnWndProc = the WndProc;       // window handler for the WndProc 
    wndclass.cbClsExtra = 0 ;              // window class None extended 
    wndclass.cbWndExtra = 0 ;              // window instance no extension 
    wndclass.hInstance = hInstance;      // this instance handle 

    wndclass.hIcon = the LoadIcon (NULL, IDI_APPLICATION); // minimized icon in the window to the default icon 
    wndclass.hCursor = LoadCursor (NULL, IDC_ARROW); // window using the cursor arrow
    = wndclass.hbrBackground (HBRUSH) the GetStockObject (WHITE_BRUSH); // window background is white 
    wndclass.lpszMenuName = NULL; // window no menu 
    wndclass.lpszClassName =, lpszClassName; // window class named "sample window"
 // - be --------- following registration window class 
    IF (! the RegisterClass (& WNDCLASS)) // if the registration fails sound an alarm sound Gao 
    { 
        the MessageBeep ( 0 );
         return FALSE; 
    } 

// create a window 
    HWND = the CreateWindow ( 
                        lpszClassName, // window class name 
                        lpszTitle,       // title name of the window instance
                        WS_OVERLAPPEDWINDOW, // window style 
                        CW_USEDEFAULT, 
                        CW_USEDEFAULT,   // upper left corner of the window coordinates to the default value 
                        CW_USEDEFAULT, 
                        CW_USEDEFAULT,   // window of Gao and wide to the default value 
                        NULL,            // the window no parent window 
                        NULL,            // this window without main menu 
                        hInstance,       // create the window of the application currently handle 
                        NULL             // do not use this value 
                        ); 



    ShowWindow (hwnd, nCmdShow);         //Display window 
    the UpdateWindow (HWND);                  // draw a user area 
    the while (the GetMessage (& Msg, NULL, 0 , 0 )) // message loop 
    { 
        TranslateMessage ( & Msg); 
        the DispatchMessage ( & Msg); 
    } 
    return msg.wParam;                   // program termination information back to the system 
} 




// window function 
LRESULT CALLBACK the WndProc (the HWND the hWnd, UINT message, WPARAM the wParam, LPARAM the lParam) 
{ 
    the HDC the hDC; 
    HBRUSH hBrush; 
    the RECT RECT; 
    HPEN HPEN; 
    the PAINTSTRUCT PTSTR; 
    static int i = 0;
    COLORREF color[7] = {RGB(255,0,0), RGB(255,165,0), RGB(255,255,0), RGB(0,255,0), RGB(0,255,255), RGB(0,0,255), RGB(139,0,255)};
    switch(message)
    {
    case WM_PAINT:
        GetClientRect(hWnd, &rect);
        hDC = BeginPaint(hWnd, &PtStr);
        hBrush = CreateSolidBrush(color[i]);
        SelectObject(hDC, hBrush);
        Rectangle(hDC, rect.left, rect.top, rect.right, rect.bottom);
        i++;


        Sleep(500);
        if (i == 7)
            i = 0;
        InvalidateRect(hWnd, NULL, 1);

        DeleteObject(hBrush);
        EndPaint(hWnd, &PtStr);

        return  0 ; 

    Case the WM_DESTROY: 
        PostQuitMessage ( 0 );                  // calls PostQuitMessage WM_QUIT message sent 
        return  0 ;
     default :
         return the DefWindowProc (the hWnd, Message, the wParam, the lParam); // use the system default message handler default 

    } 

}