Manually draw window caption with same color as normal windows

See more:

C

Win32

GDI

C++14

Hello,

I wish to manually draw what looks like a window caption during the WM_NCPAINT event. I've made some progress, but I can't seem to get the color right. It's not the same as, say, Notepad's caption bar background color, which is RGB(0, 153, 188) - a color I specified a few months back under Settings > Personlization > Colors.

There are a few Win32 #defines that come close, but I suspect that is a coincidence, and I certainly don't want to ask my program to switch to another window first to grab the color of the caption bar.

This is my code. Could you fix it or tell me how to fix it so it gets the right color? Right now the code is filling the client area with the color I've chosen, but that's on purpose. The maximize button I've drawn also looks nothing like "real" (Windows painted) caption menu buttons (iconize/minimize, restore, maximize). Can you help me there aswell? You'd think the DrawCaption function would actually draw the caption like Windows does it.

// WindowsProject2.cpp : Defines the entry point for the application.
//
#pragma comment(linker,"\"/manifestdependency:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
#include "framework.h"
#include "WindowsProject2.h"

#define MAX_LOADSTRING 100

// 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);

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_WINDOWSPROJECT2, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);

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

    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WINDOWSPROJECT2));

    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*/ CS_DBLCLKS;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINDOWSPROJECT2));
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)GetSysColorBrush(COLOR_MENUBAR);
    wcex.lpszMenuName = NULL; // MAKEINTRESOURCEW(IDC_WINDOWSPROJECT2);
    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_POPUPWINDOW,
      300, 300, 900, 700, 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:
        SetFocus(hWnd);
        CreateWindow(L"BUTTON", L"Click me!", WS_CHILD | WS_VISIBLE, 100, 100, 75, 25, hWnd, 0, 0, 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_NCPAINT:
    {
        PAINTSTRUCT ps;
        HRGN rgn = (HRGN)wParam;
        RECT rect = { 850, 0, 870, 20 };
        RECT rcCap = { 1, -9, 890, 30 };
        RECT rcWin;
        GetWindowRect(hWnd, &rcWin);
        BeginPaint(hWnd, &ps);
        SelectObject(ps.hdc, GetStockObject(BLACK_PEN));
        SelectObject(ps.hdc, GetStockObject(NULL_BRUSH));
        //Rectangle(ps.hdc, 0, 0, rcWin.right, rcWin.bottom);
        //DrawFocusRect(ps.hdc, &rect);
        DrawCaption(hWnd, ps.hdc, &rcCap, DC_ACTIVE | DC_ICON | DC_TEXT | DC_BUTTONS | DC_GRADIENT*0 | DC_SMALLCAP);

        DrawFrameControl(ps.hdc, &rect, DFC_CAPTION, DFCS_CAPTIONMAX | DFCS_HOT | DFCS_FLAT);
        EndPaint(hWnd, &ps);
    }
        break;
    case WM_SIZE:
        InvalidateRect(hWnd, NULL, FALSE);
        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;
}

The goal is to create something like Google Chrome, which has complete control over what is drawn in the caption and what happens when you click on it.

I'm running Windows 10. The #pragma on the top is to make post-XP-styled controls, but evidently it has no effect on anything else, including the caption bar.

What I have tried:

1) Looked up GetSysColor and GetSysColorBrush functions on MSDN.
2) Fiddled for hours with my code, trying all the COLOR_* #defines, but in and without GetStockObject.