Dev-C++ 建立一個視窗有2個Panel，3個 Button與 RichTextBox (2025-07-24)

Code

#include <windows.h>
#include <commctrl.h>
#include <vector>
#include <string>
#include <iostream>

#pragma comment(lib, "comctl32.lib")
#pragma comment(lib, "riched20.lib")

// 控件 ID
#define ID_PANEL_TOP    100
#define ID_SPLITTER     101
#define ID_PANEL_BOTTOM 102
#define ID_BTN1         200
#define ID_BTN2         201
#define ID_BTN3         202
#define ID_RICHEDIT     300
#define ID_STATUSBAR    400
#define ID_TIMER        500

using namespace std;

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
void OnDragDrop(HWND hwnd, WPARAM wParam, LPARAM lParam);
void AddLogEntry(const std::string& entry);

// 全局變數，讓 hRichTextBox 在所有函數中可見
HWND hRichTextBox;
HWND hButton1;
HWND hButton2;
HWND hButton3;

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int nCmdShow) {
    // 初始化公共控件
    InitCommonControls();

    // 設置窗口類
    const char CLASS_NAME[] = "Sample Window Class";
    WNDCLASS wc = {};
    wc.lpfnWndProc = WindowProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = CLASS_NAME;

    RegisterClass(&wc);

    // 創建窗口
    HWND hwnd = CreateWindowEx(0, CLASS_NAME, "Dev-C++ Example", WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 800, 600, NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);

    // 添加日誌條目
    AddLogEntry("Hello 2");
    AddLogEntry("Hello 3");
    
    // Reference: https://stackoverflow.com/questions/1333527/how-do-i-print-to-the-debug-output-window-in-a-win32-app
    // OutputDebugString("Start.");

    // 主消息循環
    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
    static HWND hPanel1, hPanel2, hStatusBar;
    static int panel1Height = 240; // Panel1 的高度
    static int _PrevMsgNumber = 0;
	char buf[32];
	
    switch (uMsg) {
    case WM_LBUTTONDOWN:
        // Mouse left button pressed down
        AddLogEntry("Mouse Left Button Down");
        return 0;
    case WM_CREATE: {
    	HINSTANCE hInst = ((LPCREATESTRUCT)lParam)->hInstance; // for instance
    	
        // 創建 Panel1
        hPanel1 = CreateWindowEx(0, "STATIC", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER,
            0, 0, 800, panel1Height, hwnd, NULL, NULL, NULL);

        // 創建三個按鈕
        CreateWindow("BUTTON", "Button 1", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 10, 10, 100, 25, hwnd, (HMENU)ID_BTN1, ((LPCREATESTRUCT) lParam)->hInstance, NULL);
        CreateWindow("BUTTON", "Button 2", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 10, 50, 100, 25, hwnd, (HMENU)ID_BTN2, ((LPCREATESTRUCT) lParam)->hInstance, NULL);
        CreateWindow("BUTTON", "Button 3", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 10, 90, 100, 25, hwnd, (HMENU)ID_BTN3, ((LPCREATESTRUCT) lParam)->hInstance, NULL);
        
        // 創建 Panel2
        hPanel2 = CreateWindowEx(0, "STATIC", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER,
            0, panel1Height, 800, 360, hwnd, NULL, NULL, NULL);

        // 創建 RichTextBox，使用全局變數 hRichTextBox
        hRichTextBox = CreateWindowEx(WS_EX_CLIENTEDGE, "EDIT", NULL, 
            WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_HSCROLL | ES_MULTILINE | ES_AUTOVSCROLL | ES_AUTOHSCROLL,
            0, 0, 800, 360, hPanel2, NULL, NULL, NULL);

        // 啟用拖放
        DragAcceptFiles(hwnd, TRUE);
        
        // 創建狀態欄
        // hStatusBar = CreateStatusWindow(WS_CHILD | WS_VISIBLE, "Status Bar", hwnd, 0);
        hStatusBar = CreateWindowA(
            STATUSCLASSNAMEA, NULL,
            WS_CHILD | WS_VISIBLE,
            0,0,0,0, hwnd, (HMENU)ID_STATUSBAR, hInst, NULL);
        SendMessage(hStatusBar, WM_SIZE, 0, 0);
        
        // 啟動 1 秒定時器
        SetTimer(hwnd, ID_TIMER, 1000, NULL);
    	}
    	return 0;
    case WM_SIZE: { 
        // 調整 Panel1 和 Panel2 大小
        MoveWindow(hPanel1, 0, 0, LOWORD(lParam), panel1Height, TRUE);
        MoveWindow(hPanel2, 0, panel1Height, LOWORD(lParam), HIWORD(lParam) - panel1Height, TRUE);
        // 要減掉狀態欄的高度為 20
        MoveWindow(hRichTextBox, 0, 0, LOWORD(lParam), HIWORD(lParam) - panel1Height - 20, TRUE); 
        MoveWindow(hStatusBar, 0, HIWORD(lParam) - 20, LOWORD(lParam), 20, TRUE); // 假設狀態欄的高度為 20
	    }
        return 0;
    case WM_DROPFILES: {
        wsprintfA(buf, "Drop File %d",uMsg);
        AddLogEntry(buf);
        OnDragDrop(hwnd, wParam, lParam);
	    }
	    return 0;

    case WM_COMMAND:
	//case WA_CLICKACTIVE:
	{
    	// AddLogEntry("WM_COMMAND Pressed");
    	// 處理各控件的 _click() 事件
        wsprintfA(buf, "Message %d",uMsg);
        AddLogEntry(buf);
    	
        switch (LOWORD(wParam))
        {
        	case ID_BTN1:
                //wsprintfA(buf, "Bbtton 1");
                //SendMessageA(hStatusBar, SB_SETTEXTA, 0 | SBT_NOBORDERS, (LPARAM)buf);
        		AddLogEntry("Button 1 Pressed");
        		break;
        	case ID_BTN2:
        		AddLogEntry("Button 2 Pressed");
        		break;
        	case ID_BTN3:
        		AddLogEntry("Button 3 Pressed");
        		// OutputDebugString("My output string.");
        		break;
		}
		return 0;
    }
    case WM_TIMER: {
    	// 處理計時器事件
        if (wParam == ID_TIMER)
        {
            SYSTEMTIME st; GetLocalTime(&st);
            char buf[32];
            wsprintfA(buf, "%04d-%02d-%02d %02d:%02d:%02d",
                      st.wYear, st.wMonth, st.wDay,
                      st.wHour, st.wMinute, st.wSecond);
            SendMessageA(hStatusBar, SB_SETTEXTA, 0 | SBT_NOBORDERS, (LPARAM)buf);
            // AddLogEntry (buf);
        }
        return 0;
    }
    case WM_DESTROY:
        KillTimer(hwnd, ID_TIMER); // 刪除Timer
        PostQuitMessage(0);
        return 0;
    }
    //case WM_GETHOTKEY:
  	//{
    //	return 0;	
	//}
    //if (_PrevMsgNumber != uMsg)
    //{
    //	_PrevMsgNumber = uMsg;
    //    wsprintfA(buf, "Message %d",_PrevMsgNumber);
    //    AddLogEntry(buf);
	//}
    return DefWindowProc(hwnd, uMsg, wParam, lParam);
}

void OnDragDrop(HWND hwnd, WPARAM wParam, LPARAM lParam) {
    HDROP hDrop = (HDROP)wParam;
    UINT cnt = DragQueryFileA(hDrop, 0xFFFFFFFF, NULL, 0);
    AddLogEntry("On Drag Drop");
    for (UINT i = 0; i < cnt; i++)
    {
        char path[MAX_PATH];
        DragQueryFileA(hDrop, i, path, MAX_PATH);
        // 手动判断扩展名
        char *ext = strrchr(path, '.');
        if (ext && _stricmp(ext, ".config") == 0)
        {
            //AddLogEntry(path);
        }
        AddLogEntry(std::to_string(i));
    
    // 將文件名添加到日誌
    //AddLogEntry(fileName);
    }

    DragFinish(hDrop);
}

void AddLogEntry(const std::string& entry) {
    std::cout << "Log Entry: " << entry << std::endl; // 調試輸出
    int len = GetWindowTextLength(hRichTextBox);
    SendMessage(hRichTextBox, EM_SETSEL, len, len);
    SendMessage(hRichTextBox, EM_REPLACESEL, TRUE, (LPARAM)entry.c_str());
    SendMessage(hRichTextBox, EM_REPLACESEL, TRUE, (LPARAM)"\r\n");
}

Notes

Highlight 的行數是與 ChatGTP 產生不同之處
下面是一個純Win32 API，可在
- 用兩個STATIC窗口＋一個細條`STSTATIC模擬SplitContainer，支
- 在上半區（Panel1）放3 個按鈕，自上而下排列，並開啟WM_DROPFILES 接受.config檔案拖放，把文_
- 在下半區（Panel2）放一個RichEdit（MSFTEDIT_CLASS）_
- 視窗底部放一個StatusBar，用定時器每秒更新「YYYY-MM-DD HH:MM :SS 」格式的目前時

// SplitterANSI.cpp
#include <windows.h>
#include <commctrl.h>
#include <richedit.h>
#include <shellapi.h>
#include <stdio.h>
#include <string.h>

// 控件 ID
#define ID_PANEL_TOP    100
#define ID_SPLITTER     101
#define ID_PANEL_BOTTOM 102
#define ID_BTN1         200
#define ID_BTN2         201
#define ID_BTN3         202
#define ID_RICHEDIT     300
#define ID_STATUSBAR    400
#define ID_TIMER        500

// 全局句柄
HWND hPanelTop, hSplitter, hPanelBot, hBtn1, hBtn2, hBtn3, hRE, hStatus;
bool dragging = false;

LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
    case WM_CREATE:
    {
        HINSTANCE hInst = ((LPCREATESTRUCT)lParam)->hInstance;

        // 上半区 Panel1
        hPanelTop = CreateWindowA(
            "STATIC", NULL,
            WS_CHILD | WS_VISIBLE | SS_ETCHEDFRAME,
            0,0,0,0,
            hWnd, (HMENU)ID_PANEL_TOP, hInst, NULL);

        // Splitter（高 4 像素）
        hSplitter = CreateWindowA(
            "STATIC", NULL,
            WS_CHILD | WS_VISIBLE | SS_ETCHEDFRAME,
            0,0,0,4,
            hWnd, (HMENU)ID_SPLITTER, hInst, NULL);

        // 下半区 Panel2
        hPanelBot = CreateWindowA(
            "STATIC", NULL,
            WS_CHILD | WS_VISIBLE | SS_ETCHEDFRAME,
            0,0,0,0,
            hWnd, (HMENU)ID_PANEL_BOTTOM, hInst, NULL);

        // 三个按钮
        hBtn1 = CreateWindowA("BUTTON", "Button 1",
                             WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
                             0,0,0,0, hPanelTop, (HMENU)ID_BTN1, hInst, NULL);
        hBtn2 = CreateWindowA("BUTTON", "Button 2",
                             WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
                             0,0,0,0, hPanelTop, (HMENU)ID_BTN2, hInst, NULL);
        hBtn3 = CreateWindowA("BUTTON", "Button 3",
                             WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
                             0,0,0,0, hPanelTop, (HMENU)ID_BTN3, hInst, NULL);

        // RichEdit 下半区
        LoadLibraryA("Msftedit.dll");
        hRE = CreateWindowExA(
            0, "RICHEDIT50W", "Hello\n",
            WS_CHILD | WS_VISIBLE |
            ES_MULTILINE | ES_AUTOVSCROLL | ES_WANTRETURN,
            0,0,0,0, hPanelBot, (HMENU)ID_RICHEDIT, hInst, NULL);

        // StatusBar
        hStatus = CreateWindowA(
            STATUSCLASSNAMEA, NULL,
            WS_CHILD | WS_VISIBLE,
            0,0,0,0, hWnd, (HMENU)ID_STATUSBAR, hInst, NULL);

        // 接受文件拖放
        DragAcceptFiles(hPanelTop, TRUE);

        // 启动 1 秒定时器
        SetTimer(hWnd, ID_TIMER, 1000, NULL);
    }
    return 0;

    case WM_SIZE:
    {
        // 计算尺寸
        RECT rc; GetClientRect(hWnd, &rc);

        // StatusBar 调整大小
        SendMessageA(hStatus, WM_SIZE, 0, 0);
        RECT rcSB; SendMessageA(hStatus, SB_GETRECT, 0, (LPARAM)&rcSB);
        int sbH = rcSB.bottom - rcSB.top;

        int availH = rc.bottom - sbH;
        int topH   = (int)(availH * 0.4);
        const int spH = 4;

        // 布局
        MoveWindow(hPanelTop,    0, 0, rc.right, topH,    TRUE);
        MoveWindow(hSplitter,    0, topH, rc.right, spH,   TRUE);
        MoveWindow(hPanelBot,    0, topH+spH, rc.right, availH-topH-spH, TRUE);

        // 按钮等分
        int btnH = topH / 3;
        MoveWindow(hBtn1,  0,     0,      rc.right, btnH, TRUE);
        MoveWindow(hBtn2,  0,     btnH,   rc.right, btnH, TRUE);
        MoveWindow(hBtn3,  0,     btnH*2, rc.right, topH-btnH*2, TRUE);

        // RichEdit 填满 PanelBot
        MoveWindow(hRE, 0, 0, rc.right, availH-topH-spH, TRUE);
    }
    return 0;

    case WM_LBUTTONDOWN:
    {
        POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
        RECT r; GetWindowRect(hSplitter, &r);
        ScreenToClient(hWnd, (LPPOINT)&r);
        if (pt.y >= r.top && pt.y <= r.bottom)
        {
            dragging = true;
            SetCapture(hWnd);
        }
    }
    return 0;

    case WM_MOUSEMOVE:
        if (dragging)
        {
            int y = GET_Y_LPARAM(lParam);
            RECT rc; GetClientRect(hWnd, &rc);
            RECT rcSB; SendMessageA(hStatus, SB_GETRECT, 0, (LPARAM)&rcSB);
            int sbH = rcSB.bottom - rcSB.top;
            int availH = rc.bottom - sbH;
            if (y < 0) y = 0;
            if (y > availH) y = availH;

            const int spH = 4;
            MoveWindow(hPanelTop,    0,0,rc.right,y, TRUE);
            MoveWindow(hSplitter,    0,y,rc.right,spH, TRUE);
            MoveWindow(hPanelBot,    0,y+spH, rc.right, availH-y-spH, TRUE);

            int btnH = y / 3;
            MoveWindow(hBtn1,  0,     0,      rc.right, btnH, TRUE);
            MoveWindow(hBtn2,  0,     btnH,   rc.right, btnH, TRUE);
            MoveWindow(hBtn3,  0,     btnH*2, rc.right, y-btnH*2, TRUE);
            MoveWindow(hRE,    0,     0,      rc.right, availH-y-spH, TRUE);
        }
        return 0;

    case WM_LBUTTONUP:
        if (dragging) { dragging = false; ReleaseCapture(); }
        return 0;

    case WM_DROPFILES:
    {
        HDROP hDrop = (HDROP)wParam;
        UINT cnt = DragQueryFileA(hDrop, 0xFFFFFFFF, NULL, 0);
        for (UINT i = 0; i < cnt; i++)
        {
            char path[MAX_PATH];
            DragQueryFileA(hDrop, i, path, MAX_PATH);
            // 手动判断扩展名
            char *ext = strrchr(path, '.');
            if (ext && _stricmp(ext, ".config") == 0)
            {
                int len = GetWindowTextLengthA(hRE);
                SendMessageA(hRE, EM_SETSEL, len, len);
                SendMessageA(hRE, EM_REPLACESEL, 0, (LPARAM)path);
                SendMessageA(hRE, EM_REPLACESEL, 0, (LPARAM)"\r\n");
            }
        }
        DragFinish(hDrop);
    }
    return 0;

    case WM_COMMAND:
    {
        int id = LOWORD(wParam);
        const char* msg = NULL;
        if (id == ID_BTN1) msg = "Button 1 Pressed\r\n";
        if (id == ID_BTN2) msg = "Button 2 Pressed\r\n";
        if (id == ID_BTN3) msg = "Button 3 Pressed\r\n";
        if (msg)
        {
            int len = GetWindowTextLengthA(hRE);
            SendMessageA(hRE, EM_SETSEL, len, len);
            SendMessageA(hRE, EM_REPLACESEL, 0, (LPARAM)msg);
        }
    }
    return 0;

    case WM_TIMER:
        if (wParam == ID_TIMER)
        {
            SYSTEMTIME st; GetLocalTime(&st);
            char buf[32];
            wsprintfA(buf, "%04d-%02d-%02d %02d:%02d:%02d",
                      st.wYear, st.wMonth, st.wDay,
                      st.wHour, st.wMinute, st.wSecond);
            SendMessageA(hStatus, SB_SETTEXTA, 0 | SBT_NOBORDERS, (LPARAM)buf);
        }
        return 0;

    case WM_DESTROY:
        KillTimer(hWnd, ID_TIMER);
        PostQuitMessage(0);
        return 0;
    }
    return DefWindowProcA(hWnd, msg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, int nCmdShow)
{
    INITCOMMONCONTROLSEX icc = { sizeof(icc), ICC_BAR_CLASSES };
    InitCommonControlsEx(&icc);

    WNDCLASSA wc = {0};
    wc.lpfnWndProc   = WndProc;
    wc.hInstance     = hInst;
    wc.lpszClassName = "SplitWinANSI";
    wc.hCursor       = LoadCursorA(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
    RegisterClassA(&wc);

    HWND hWnd = CreateWindowA(
        wc.lpszClassName, "Win32 SplitContainer Demo (ANSI)",
        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
        800, 600,
        NULL, NULL, hInst, NULL);
    ShowWindow(hWnd, nCmdShow);

    MSG msg;
    while (GetMessageA(&msg, NULL, 0, 0))
        DispatchMessageA(&msg);
    return (int)msg.wParam;
}

模擬SplitContainer:
- 上半區、下半區皆用STATIC控制項（附邊框），SplitterSTATIC；
- 在WM_MOUSE*中捕獲並根據滑鼠Y 座標動態*_
按鈕
- 在PanelTop裡創建三個`BUTTONBUTTON，統一通過`WM_COMMA_WM_COMMAND識別`I_ID_BTN1/2/3，並往下方RichEd
拖放.config 文件
- 對PanelTop呼叫`DragAcceptDragAcceptFiles(TRUE)並回應`WM_DROPFI_WM_DROPFILES，用`_DragQueryFile列出檔名，僅對`.c_.config擴展名做處理。
RichEdit 控件
- 使用MSFTEDIT_CLASS（需載入`Msftedit._Msftedit.dll）ES_MULTILINE，、ES_AUTOVSCROLL_“Hello\n”。
狀態列 + 計時器
- 使用通用的Win32 CreateWindow(STATUSCLASSNAME…)，然後SetTimer每秒觸發`WM_TIME_WM_TIMER，取`GetLo_GetLocalTime()並SB_SETTEXT更新。
將上面這段程式碼在Dev-C++ 6.3 下新建一個Win32 GUI 工程，連結Comctl32.lib和Msftedit.lib，即可得到你要的效果：分割條可拖曳、40%/60% 初始、按鈕點擊與拖放日誌記錄、底部狀態列顯示目前時間。

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