Win32 Splitter Control

Question

Of all the different controls that there are for Win32, is there any basic, lightweight Splitter/Splitcontainer control available (meaning one or two C/C++ files

Answer 1

There is no native win32 splitter, I made one using pure win32 api in one cpp file.

    // Win32test2.cpp : 定义应用程序的入口点。
//

#include "stdafx.h"
#include "Win32test2.h"

LRESULT CALLBACK windowprocessforwindow1(HWND handleforwindow1, UINT message, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK windowprocessforwindow2(HWND handleforwindow2, UINT message, WPARAM wParam, LPARAM lParam);

bool window1closed = false;
bool window2closed = false;

//child hwnd 小子窗口，非弹出式子窗口，是CreateWindowEx设置了parent
HWND cHwnd[5]; //0 左窗口 1 右窗口或右上窗口  2 竖分隔符窗口 spiltter 3 右下窗口  4 横分隔符窗口 spiltter
//main hwnd
HWND mHwnd;

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpCmdLine, int nShowCmd)
{
    bool endprogram = false;

    //create window 1

    WNDCLASSEX windowclassforwindow1;
    ZeroMemory(&windowclassforwindow1, sizeof(WNDCLASSEX));
    windowclassforwindow1.cbClsExtra = NULL;
    windowclassforwindow1.cbSize = sizeof(WNDCLASSEX);
    windowclassforwindow1.cbWndExtra = NULL;
    windowclassforwindow1.hbrBackground = (HBRUSH)COLOR_WINDOW;
    windowclassforwindow1.hCursor = LoadCursor(NULL, IDC_ARROW);
    windowclassforwindow1.hIcon = NULL;
    windowclassforwindow1.hIconSm = NULL;
    windowclassforwindow1.hInstance = hInst;
    windowclassforwindow1.lpfnWndProc = (WNDPROC)windowprocessforwindow1;
    windowclassforwindow1.lpszClassName = L"windowclass 1";
    windowclassforwindow1.lpszMenuName = NULL;
    windowclassforwindow1.style = CS_HREDRAW | CS_VREDRAW;

    if (!RegisterClassEx(&windowclassforwindow1))
    {
        int nResult = GetLastError();
        MessageBox(NULL,
            L"Window class creation failed",
            L"Window Class Failed",
            MB_ICONERROR);
    }

    HWND handleforwindow1 = CreateWindowEx(NULL,
        windowclassforwindow1.lpszClassName,
        L"Parent Window",
        WS_OVERLAPPEDWINDOW,
        200,
        200,
        640,
        480,
        NULL,
        NULL,
        hInst,
        NULL                /* No Window Creation data */
    );

    if (!handleforwindow1)
    {
        int nResult = GetLastError();

        MessageBox(NULL,
            L"Window creation failed",
            L"Window Creation Failed",
            MB_ICONERROR);
    }

    ShowWindow(handleforwindow1, nShowCmd);
    mHwnd = handleforwindow1;


    // create window 2

    WNDCLASSEX windowclassforwindow2;
    ZeroMemory(&windowclassforwindow2, sizeof(WNDCLASSEX));
    windowclassforwindow2.cbClsExtra = NULL;
    windowclassforwindow2.cbSize = sizeof(WNDCLASSEX);
    windowclassforwindow2.cbWndExtra = NULL;
    windowclassforwindow2.hbrBackground = (HBRUSH)COLOR_WINDOW;
    windowclassforwindow2.hCursor = LoadCursor(NULL, IDC_ARROW);
    windowclassforwindow2.hIcon = NULL;
    windowclassforwindow2.hIconSm = NULL;
    windowclassforwindow2.hInstance = hInst;
    windowclassforwindow2.lpfnWndProc = (WNDPROC)windowprocessforwindow2;
    windowclassforwindow2.lpszClassName = L"window class2";
    windowclassforwindow2.lpszMenuName = NULL;
    windowclassforwindow2.style = CS_HREDRAW | CS_VREDRAW;

    if (!RegisterClassEx(&windowclassforwindow2))
    {
        int nResult = GetLastError();
        MessageBox(NULL,
            L"Window class creation failed for window 2",
            L"Window Class Failed",
            MB_ICONERROR);
    }

    HWND handleforwindow2 = CreateWindowEx(NULL,
        windowclassforwindow2.lpszClassName,
        L"Child Window",
        WS_CHILD 
        ,
        0,
        0,
        195,
        480,
        handleforwindow1,
        NULL,
        hInst,
        NULL);

    if (!handleforwindow2)
    {
        int nResult = GetLastError();

        MessageBox(NULL,
            L"Window creation failed",
            L"Window Creation Failed",
            MB_ICONERROR);
    }

    ShowWindow(handleforwindow2, nShowCmd);
    cHwnd[0] = handleforwindow2;

    // create window 3

    HWND handleforwindow3 = CreateWindowEx(NULL,
        windowclassforwindow2.lpszClassName,
        L"Child Window",
        WS_CHILD 
        ,
        200,
        0,
        440,
        275,
        handleforwindow1,
        NULL,
        hInst,
        NULL);

    if (!handleforwindow3)
    {
        int nResult = GetLastError();

        MessageBox(NULL,
            L"Window creation failed",
            L"Window Creation Failed",
            MB_ICONERROR);
    }

    ShowWindow(handleforwindow3, nShowCmd);
    cHwnd[1] = handleforwindow3;

    // create window 4 spiltter

    WNDCLASSEX windowclassforwindow4;
    ZeroMemory(&windowclassforwindow4, sizeof(WNDCLASSEX));
    windowclassforwindow4.cbClsExtra = NULL;
    windowclassforwindow4.cbSize = sizeof(WNDCLASSEX);
    windowclassforwindow4.cbWndExtra = NULL;
    windowclassforwindow4.hbrBackground = (HBRUSH)COLOR_WINDOW;
    windowclassforwindow4.hCursor = LoadCursor(NULL, IDC_SIZEWE);
    windowclassforwindow4.hIcon = NULL;
    windowclassforwindow4.hIconSm = NULL;
    windowclassforwindow4.hInstance = hInst;
    windowclassforwindow4.lpfnWndProc = (WNDPROC)windowprocessforwindow2;
    windowclassforwindow4.lpszClassName = L"window class4";
    windowclassforwindow4.lpszMenuName = NULL;
    windowclassforwindow4.style = CS_HREDRAW | CS_VREDRAW;

    if (!RegisterClassEx(&windowclassforwindow4))
    {
        int nResult = GetLastError();
        MessageBox(NULL,
            L"Window class creation failed for window 2",
            L"Window Class Failed",
            MB_ICONERROR);
    }

    HWND handleforwindow4 = CreateWindowEx(NULL,
        windowclassforwindow4.lpszClassName,
        L"Child Window",
        WS_CHILD \
        | WS_BORDER
        ,
        195,
        0,
        5,
        480,
        handleforwindow1,
        NULL,
        hInst,
        NULL);

    if (!handleforwindow4)
    {
        int nResult = GetLastError();

        MessageBox(NULL,
            L"Window creation failed",
            L"Window Creation Failed",
            MB_ICONERROR);
    }

    ShowWindow(handleforwindow4, nShowCmd);
    cHwnd[2] = handleforwindow4;

    // create window 5 有窗口下面窗口

    HWND handleforwindow5 = CreateWindowEx(NULL,
        windowclassforwindow2.lpszClassName,
        L"Child Window",
        WS_CHILD
        ,
        200,
        280,
        440,
        200,
        handleforwindow1,
        NULL,
        hInst,
        NULL);

    if (!handleforwindow5)
    {
        int nResult = GetLastError();

        MessageBox(NULL,
            L"Window creation failed",
            L"Window Creation Failed",
            MB_ICONERROR);
    }
    ShowWindow(handleforwindow5, nShowCmd);
    cHwnd[3] = handleforwindow5;

    // create window 6 spiltter 右窗口spiltter

    WNDCLASSEX windowclassforwindow6;
    ZeroMemory(&windowclassforwindow6, sizeof(WNDCLASSEX));
    windowclassforwindow6.cbClsExtra = NULL;
    windowclassforwindow6.cbSize = sizeof(WNDCLASSEX);
    windowclassforwindow6.cbWndExtra = NULL;
    windowclassforwindow6.hbrBackground = (HBRUSH)COLOR_WINDOW;
    windowclassforwindow6.hCursor = LoadCursor(NULL, IDC_SIZENS);
    windowclassforwindow6.hIcon = NULL;
    windowclassforwindow6.hIconSm = NULL;
    windowclassforwindow6.hInstance = hInst;
    windowclassforwindow6.lpfnWndProc = (WNDPROC)windowprocessforwindow2;
    windowclassforwindow6.lpszClassName = L"window class6";
    windowclassforwindow6.lpszMenuName = NULL;
    windowclassforwindow6.style = CS_HREDRAW | CS_VREDRAW;

    if (!RegisterClassEx(&windowclassforwindow6))
    {
        int nResult = GetLastError();
        MessageBox(NULL,
            L"Window class creation failed for window 2",
            L"Window Class Failed",
            MB_ICONERROR);
    }

    HWND handleforwindow6 = CreateWindowEx(NULL,
        windowclassforwindow6.lpszClassName,
        L"Child Window",
        WS_CHILD \
        | WS_BORDER
        ,
        200,
        275,
        480,
        5,
        handleforwindow1,
        NULL,
        hInst,
        NULL);

    if (!handleforwindow6)
    {
        int nResult = GetLastError();

        MessageBox(NULL,
            L"Window creation failed",
            L"Window Creation Failed",
            MB_ICONERROR);
    }

    ShowWindow(handleforwindow6, nShowCmd);
    cHwnd[4] = handleforwindow6;

    MSG msg;
    ZeroMemory(&msg, sizeof(MSG));
    while (endprogram == false) {
        if (GetMessage(&msg, NULL, 0, 0));
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
        if (window1closed == true && window2closed == true) {
            endprogram = true;
        }
    }

    return 0;
}

LRESULT CALLBACK windowprocessforwindow1(HWND handleforwindow, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
    case WM_DESTROY: {

        window1closed = true;
        return 0;
    }
                     break;
    }

    return DefWindowProc(handleforwindow, msg, wParam, lParam);
}

//子窗口处理
LRESULT CALLBACK windowprocessforwindow2(HWND handleforwindow, UINT msg, WPARAM wParam, LPARAM lParam)
{
    //鼠标拖动spiltter时，相对于主窗口的x
    int spos,border;
    //鼠标左键单击spiltter时，在spiltter内部的偏移长度
    int posinspiltter = 0;
    static BOOL bSplitterMoving;

    RECT rectMain,rectSpiltterH,rectRightUp;

    switch (msg)
    {
    case WM_DESTROY: {


        window2closed = true;
        return 0;
    }
    case WM_LBUTTONDOWN:

        if (handleforwindow == cHwnd[0])
        {
            MessageBox(NULL, TEXT("1鼠标左键点击"), TEXT("Win32_Mouse"), MB_OK);
        }else if (handleforwindow == cHwnd[1])
        {
            MessageBox(NULL, TEXT("2鼠标左键点击"), TEXT("Win32_Mouse"), MB_OK);
        }
        else if (handleforwindow == cHwnd[3])
        {
            MessageBox(NULL, TEXT("3鼠标左键点击"), TEXT("Win32_Mouse"), MB_OK);
        }
        else if (handleforwindow == cHwnd[2])
        {
            //MessageBox(NULL, TEXT("3鼠标左键点击"), TEXT("Win32_Mouse"), MB_OK);
            bSplitterMoving = TRUE;
            //抓住左窗口，WM_MOUSEMOVE得到的就是鼠标相对于左窗口移动距离
            SetCapture(cHwnd[0]);
            posinspiltter = GET_X_LPARAM(lParam);
            return 0;
        }
        else if (handleforwindow == cHwnd[4])
        {
            //MessageBox(NULL, TEXT("3鼠标左键点击"), TEXT("Win32_Mouse"), MB_OK);
            bSplitterMoving = TRUE;
            //抓住右上窗口
            SetCapture(cHwnd[1]);
            posinspiltter = GET_Y_LPARAM(lParam);
            return 0;
        }

        break;
    case WM_LBUTTONUP:
        ReleaseCapture();
        bSplitterMoving = FALSE;
        return 0;
    case WM_MOUSEMOVE:
        if ((wParam == MK_LBUTTON) && bSplitterMoving && (handleforwindow == cHwnd[0]))
        {
            spos = GET_X_LPARAM(lParam);
            //spos- posinspiltter  鼠标的相对于主窗口的x - 在spiltter内的偏移 就是左窗口的宽度
            MoveWindow(cHwnd[0], 0, 0, spos- posinspiltter, 480, TRUE); //左窗口
            //spos+(5- posinspiltter)  5- posinspiltter是点击位置到spiltter有边框的距离， 鼠标的相对于主窗口的x + 点击位置到spiltter有边框的距离就是 有窗口的x起始位置
            //640-(spos + (5 - posinspiltter))  640是主窗口宽度 - 有窗口的起始位置，就是宽度

            MoveWindow(cHwnd[2], spos, 0, 5, 480, TRUE); //spiltter

            GetWindowRect(mHwnd, &rectMain);
            GetWindowRect(cHwnd[1], &rectRightUp);

            MoveWindow(cHwnd[1], spos + (5 - posinspiltter), 0, 640 - (spos + (5 - posinspiltter)), rectRightUp.bottom - rectMain.top - 31, TRUE); //右窗口

            MoveWindow(cHwnd[3], spos + (5 - posinspiltter), rectRightUp.bottom- rectMain.top-31+5, 640 - (spos + (5 - posinspiltter)), 480 - (rectRightUp.bottom -     rectMain.top - 31 + 5), TRUE); //右下
            MoveWindow(cHwnd[4], spos + (5 - posinspiltter), rectRightUp.bottom - rectMain.top - 31, 640 - (spos + (5 - posinspiltter)), 5, TRUE); //spiltter
        }
        else if ((wParam == MK_LBUTTON) && bSplitterMoving && (handleforwindow == cHwnd[1]))
        {
            border = GetSystemMetrics(SM_CXBORDER);
            spos = GET_Y_LPARAM(lParam);

            GetWindowRect(mHwnd, &rectMain);
            GetWindowRect(cHwnd[2], &rectSpiltterH);
            GetWindowRect(cHwnd[1], &rectRightUp);

            MoveWindow(cHwnd[1], rectRightUp.left - rectMain.left-8, 0, rectRightUp.right-rectRightUp.left, spos - posinspiltter, TRUE); //右上
            MoveWindow(cHwnd[3], rectRightUp.left - rectMain.left-8, spos + (5-posinspiltter), rectRightUp.right - rectRightUp.left, 480-(spos + (5 -     posinspiltter)), TRUE); //右下
            MoveWindow(cHwnd[4], rectRightUp.left - rectMain.left-8, spos - posinspiltter, rectRightUp.right - rectRightUp.left, 5, TRUE); //spiltter

        }
        return 0;
    }

    return DefWindowProc(handleforwindow, msg, wParam, lParam);
}