Creating Owner-Drawn Menu Example

Copy

#include <windows.h>

#define WINVER 0x0501

#define IDM_MENUITEM1  1
#define IDM_MENUITEM2  2
#define IDM_FILE_QUIT  3

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE hInstance,
                   HINSTANCE hPrevInstance,
                   LPSTR lpCmdLine,
                   int nCmdShow)
{
    MSG msg;
    WNDCLASS wc;

    ZeroMemory(&wc, sizeof(WNDCLASS));

    wc.lpszClassName = TEXT("Menu Demonstration");
    wc.hInstance     = hInstance;
    wc.hbrBackground = (HBRUSH)(COLOR_3DFACE + 1);
    wc.lpfnWndProc   = WndProc;
    wc.hCursor       = LoadCursor(NULL, IDC_ARROW);

    RegisterClass(&wc);

    CreateWindow(
        wc.lpszClassName,
        TEXT("Owner Drawn Menu"),
        WS_OVERLAPPEDWINDOW | WS_VISIBLE,
        100,
        100,
        350,
        180,
        NULL,
        NULL,
        hInstance,
        NULL);

    while(GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam;
}



LRESULT CALLBACK WndProc(HWND hwnd,
                         UINT uMsg,
                         WPARAM wParam,
                         LPARAM lParam)
{
    switch(uMsg)
    {

    case WM_CREATE:
    {
        // Create menu bar
        HMENU Bar  = CreateMenu();
        HMENU File = CreateMenu();
        HMENU Edit = CreateMenu();

        AppendMenu(Bar,MF_POPUP,(UINT)File,TEXT("File"));
        AppendMenu(Bar,MF_POPUP,(UINT)Edit,TEXT("Edit"));

        // Create owner drawn menu items
        AppendMenu(File,
                   MF_OWNERDRAW | MF_STRING,
                   IDM_MENUITEM1,
                   TEXT("Item 1"));

        AppendMenu(File,
                   MF_OWNERDRAW | MF_STRING,
                   IDM_MENUITEM2,
                   TEXT("Item 2"));

        AppendMenu(Edit,
                   MF_STRING,
                   IDM_FILE_QUIT,
                   TEXT("Quit"));

        SetMenu(hwnd,Bar);

        break;
    }



    // Sent when an owner drawn menu is created
    case WM_MEASUREITEM:
    {
        LPMEASUREITEMSTRUCT lpmis;

        lpmis = (LPMEASUREITEMSTRUCT)lParam;

        switch(lpmis->itemID)
        {
        case IDM_MENUITEM1:

            lpmis->itemWidth  = 120;
            lpmis->itemHeight = 50;

            break;

        case IDM_MENUITEM2:

            lpmis->itemWidth  = 120;
            lpmis->itemHeight = 70;

            break;
        }

        return TRUE;
    }



    // Draw owner drawn menu items
    case WM_DRAWITEM:
    {
        LPDRAWITEMSTRUCT lpdis;
        RECT rect;
        HBRUSH bkBrush;
        HBRUSH oldBrush;

        lpdis = (LPDRAWITEMSTRUCT)lParam;

        // Draw background

        if(lpdis->itemState & ODS_SELECTED)
        {
            SetTextColor(lpdis->hDC,RGB(255,255,255));

            bkBrush =
            CreateSolidBrush(RGB(0,0,160));
        }
        else
        {
            SetTextColor(lpdis->hDC,RGB(0,0,0));

            bkBrush =
            CreateSolidBrush(RGB(255,255,255));
        }

        FillRect(lpdis->hDC,
                 &lpdis->rcItem,
                 bkBrush);

        DeleteObject(bkBrush);



        // Draw border

        bkBrush =
        CreateSolidBrush(RGB(255,255,0));

        oldBrush =
        (HBRUSH)SelectObject(lpdis->hDC,
                             bkBrush);

        Rectangle(lpdis->hDC,
                  lpdis->rcItem.left + 2,
                  lpdis->rcItem.top + 2,
                  lpdis->rcItem.right - 2,
                  lpdis->rcItem.bottom - 2);

        SelectObject(lpdis->hDC,
                     oldBrush);

        DeleteObject(bkBrush);



        // Draw menu text

        rect = lpdis->rcItem;

        rect.left += 8;

        SetBkMode(lpdis->hDC,TRANSPARENT);

        switch(lpdis->itemID)
        {
        case IDM_MENUITEM1:

            DrawText(lpdis->hDC,
                     TEXT("Item 1"),
                     -1,
                     &rect,
                     DT_SINGLELINE | DT_VCENTER);

            break;

        case IDM_MENUITEM2:

            DrawText(lpdis->hDC,
                     TEXT("Item 2"),
                     -1,
                     &rect,
                     DT_SINGLELINE | DT_VCENTER);

            break;
        }

        return TRUE;
    }



    case WM_COMMAND:

        switch(LOWORD(wParam))
        {

        case IDM_MENUITEM1:

            MessageBox(hwnd,
                       TEXT("Menu Item 1"),
                       TEXT("Owner Drawn Menu"),
                       MB_OK);

            break;


        case IDM_MENUITEM2:

            MessageBox(hwnd,
                       TEXT("Menu Item 2"),
                       TEXT("Owner Drawn Menu"),
                       MB_OK);

            break;


        case IDM_FILE_QUIT:

            DestroyWindow(hwnd);

            break;
        }

        break;



    case WM_DESTROY:

        PostQuitMessage(0);

        break;
    }

    return DefWindowProc(hwnd,
                         uMsg,
                         wParam,
                         lParam);
}