WinAPI - Как заставить кнопку рисования владельца вести себя как кнопка pu sh?

Question

Я не нашел способа убрать границу кнопок windows, поэтому я решил создать кнопку владельца, которая работает нормально, но я хочу, чтобы при ее нажатии она выглядела как кнопка, как мне это сделать? go об этом? Возможно ли это?

Редактировать: GIF ниже объясняет все, короче говоря, я хочу, чтобы владелец draw (оранжевая кнопка) имел ту же анимацию, что и кнопка stati c в середине, то есть для перемещения при нажатии

Answer 1

Используйте два изображения с различной глубиной цвета для имитации визуального эффекта нажатия.

Вот код для справки:

// Test_Button.cpp : Defines the entry point for the application.
//

#include "framework.h"
#include "Test_Button.h"
#include <commctrl.h>
#pragma comment(lib,"Comctl32.lib")

#define MAX_LOADSTRING 100
#define IDC_OWNERDRAWBUTTON 101

// Global Variables:
HINSTANCE hInst;                                // current instance
WCHAR szTitle[MAX_LOADSTRING];                  // The title bar text
WCHAR szWindowClass[MAX_LOADSTRING];            // the main window class name

// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK OwnerDrawButtonProc(HWND hWnd, UINT uMsg, WPARAM wParam,
    LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData);
HWND hWndStatic;
HBITMAP hBmp1;
HBITMAP hBmp;

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPWSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    // TODO: Place code here.

    // Initialize global strings
    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_TESTBUTTON, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);


    // Perform application initialization:
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_TESTBUTTON));

    MSG msg;

    // Main message loop:
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }

    return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEXW wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style          = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_TESTBUTTON));
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = MAKEINTRESOURCEW(IDC_TESTBUTTON);
    wcex.lpszClassName  = szWindowClass;
    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

    return RegisterClassExW(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hInst = hInstance; // Store instance handle in our global variable

   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE: Processes messages for the main window.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{

    switch (message)
    {
    case WM_CREATE:
    {
        hBmp = (HBITMAP)LoadImage(GetModuleHandle(NULL),
            MAKEINTRESOURCE(IDB_BITMAP1),
            IMAGE_BITMAP,
            NULL,
            NULL,
            LR_DEFAULTCOLOR);
        hBmp1 = (HBITMAP)LoadImage(GetModuleHandle(NULL),
            MAKEINTRESOURCE(IDB_BITMAP2),
            IMAGE_BITMAP,
            NULL,
            NULL,
            LR_DEFAULTCOLOR);
        hWndStatic = CreateWindowEx(0, L"button", NULL, WS_CHILD | WS_VISIBLE | BS_OWNERDRAW, 500, 400, 46, 29, hWnd, (HMENU)IDC_OWNERDRAWBUTTON, hInst, NULL);
        SetWindowSubclass(hWndStatic, &OwnerDrawButtonProc, IDC_OWNERDRAWBUTTON, 0);     
    }
    break;
    case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
            // Parse the menu selections:
            switch (wmId)
            {          
            case IDM_ABOUT:
                DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
                break;
            case IDM_EXIT:
                DestroyWindow(hWnd);
                break;
            default:
                return DefWindowProc(hWnd, message, wParam, lParam);
            }
        }
        break;
    case WM_PAINT:
        {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hWnd, &ps);
            // TODO: Add any drawing code that uses hdc here...

            EndPaint(hWnd, &ps);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    UNREFERENCED_PARAMETER(lParam);
    switch (message)
    {
    case WM_INITDIALOG:
        return (INT_PTR)TRUE;

    case WM_COMMAND:
        if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
        {
            EndDialog(hDlg, LOWORD(wParam));
            return (INT_PTR)TRUE;
        }
        break;
    }
    return (INT_PTR)FALSE;
}

LRESULT CALLBACK OwnerDrawButtonProc(HWND hWnd, UINT uMsg, WPARAM wParam,
    LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
    BITMAP          bitmap01;
    HDC             hdcMem01;
    HGDIOBJ         oldBitmap01;
    switch (uMsg)
    {
    case WM_LBUTTONDOWN:
    {
        RECT rc;
        HDC hdc = GetDC(hWnd);
        hdcMem01 = CreateCompatibleDC(hdc);
        oldBitmap01 = SelectObject(hdcMem01, hBmp1);

        GetObject(hBmp1, sizeof(bitmap01), &bitmap01);
        BitBlt(hdc, 0, 0, bitmap01.bmWidth, bitmap01.bmHeight, hdcMem01, 0, 0, SRCCOPY);

        SelectObject(hdcMem01, oldBitmap01);  
        DeleteDC(hdcMem01);
    }
    break;
    case WM_PAINT:
    {
        RECT rc;
        PAINTSTRUCT ps;
        HDC hdc = BeginPaint(hWnd, &ps);
        hdcMem01 = CreateCompatibleDC(hdc);
        oldBitmap01 = SelectObject(hdcMem01, hBmp);

        GetObject(hBmp, sizeof(bitmap01), &bitmap01);
        BitBlt(hdc, 0, 0, bitmap01.bmWidth, bitmap01.bmHeight, hdcMem01, 0, 0, SRCCOPY);

        SelectObject(hdcMem01, oldBitmap01);
        DeleteDC(hdcMem01);
        EndPaint(hWnd, &ps);   
    }
    break;
    case WM_LBUTTONUP:
    {
        HDC hdc = GetDC(hWnd);
        hdcMem01 = CreateCompatibleDC(hdc);
        oldBitmap01 = SelectObject(hdcMem01, hBmp);

        GetObject(hBmp, sizeof(bitmap01), &bitmap01);
        BitBlt(hdc, 0, 0, bitmap01.bmWidth, bitmap01.bmHeight, hdcMem01, 0, 0, SRCCOPY);

        SelectObject(hdcMem01, oldBitmap01);
        DeleteDC(hdcMem01);
    }
    break;
    case WM_NCDESTROY:
        RemoveWindowSubclass(hWnd, &OwnerDrawButtonProc, 1);
        break;
    }
    return DefSubclassProc(hWnd, uMsg, wParam, lParam);
}

Отладка: