win32调色器源码

很简单，只用到了一个非模态对话框，需要注意的是主窗口的样式包括WS_CLIPCHILDREN,这可以使程序在不擦除对话框的情况下重绘主窗口
color2.cpp

// Color2.cpp : 定义应用程序的入口点。
//

#include "stdafx.h"
#include "Color2.h"

#define MAX_LOADSTRING 100

// 全局变量:
HINSTANCE hInst;								// 当前实例
TCHAR szTitle[MAX_LOADSTRING];					// 标题栏文本
TCHAR szWindowClass[MAX_LOADSTRING];			// 主窗口类名
HWND hDlgModeless;

// 此代码模块中包含的函数的前向声明:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);
BOOL CALLBACK ColorScrDlg(HWND,UINT,WPARAM,LPARAM);

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPTSTR    lpCmdLine,
_In_ int       nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);

// TODO:  在此放置代码。
MSG msg;
HACCEL hAccelTable;

// 初始化全局字符串
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_COLOR2, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);

// 执行应用程序初始化:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}

hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_COLOR2));

// 主消息循环:
while (GetMessage(&msg, NULL, 0, 0))
{
if (hDlgModeless == 0 || !IsDialogMessage(hDlgModeless,&msg)){
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}

return (int) msg.wParam;
}

//
//  函数:  MyRegisterClass()
//
//  目的:  注册窗口类。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX 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_COLOR2));
wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_COLOR2);
wcex.lpszClassName	= szWindowClass;
wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

return RegisterClassEx(&wcex);
}

//
//   函数:  InitInstance(HINSTANCE, int)
//
//   目的:  保存实例句柄并创建主窗口
//
//   注释:
//
//        在此函数中，我们在全局变量中保存实例句柄并
//        创建和显示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;

hInst = hInstance; // 将实例句柄存储在全局变量中

hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW|WS_CLIPCHILDREN,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

if (!hWnd)
{
return FALSE;
}

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

hDlgModeless = CreateDialog(hInst,TEXT("ColorScrDlg"),hWnd,ColorScrDlg);

return TRUE;
}

//
//  函数:  WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  目的:    处理主窗口的消息。
//
//  WM_COMMAND	- 处理应用程序菜单
//  WM_PAINT	- 绘制主窗口
//  WM_DESTROY	- 发送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;

switch (message)
{
case WM_COMMAND:
wmId    = LOWORD(wParam);
wmEvent = HIWORD(wParam);
// 分析菜单选择:
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:
hdc = BeginPaint(hWnd, &ps);
// TODO:  在此添加任意绘图代码...
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
DeleteObject((HGDIOBJ)SetClassLong(hWnd, GCL_HBRBACKGROUND, (LONG)GetStockObject(WHITE_BRUSH)));
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}

BOOL CALLBACK ColorScrDlg(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){
static int iColor[3];
HWND hWndParent, hCtrl;
int iCtrlID, iIndex;
switch (message){
case WM_INITDIALOG:
for (iCtrlID = 10; iCtrlID < 13; iCtrlID++){
hCtrl = GetDlgItem(hDlg,iCtrlID);
SetScrollRange(hCtrl,SB_CTL,0,255,FALSE);
SetScrollPos(hCtrl,SB_CTL,0,FALSE);
}
return TRUE;
case WM_VSCROLL:
hCtrl = (HWND)lParam;
iCtrlID = GetWindowLong(hCtrl, GWL_ID);
iIndex = iCtrlID - 10;
hWndParent = GetParent(hDlg);
switch (LOWORD(wParam)){
case SB_PAGEDOWN:
iColor[iIndex] += 15;
case SB_LINEDOWN:
iColor[iIndex] = min(255,iColor[iIndex]+1);
break;
case SB_PAGEUP:
iColor[iIndex] -= 15;
case SB_LINEUP:
iColor[iIndex] = max(0,iColor[iIndex]-1);
break;
case SB_TOP:
iColor[iIndex] = 0;
break;
case SB_BOTTOM:
iColor[iIndex] = 255;
break;
case SB_THUMBPOSITION:
case SB_THUMBTRACK:
iColor[iIndex] = HIWORD(wParam);
break;
default:
return FALSE;
}
SetScrollPos(hCtrl, SB_CTL, iColor[iIndex], TRUE);
SetDlgItemInt(hDlg, iCtrlID + 3, iColor[iIndex],FALSE);
DeleteObject((HGDIOBJ)SetClassLong(hWndParent,GCL_HBRBACKGROUND,(LONG)CreateSolidBrush(RGB(iColor[0],iColor[1],iColor[2]))));
InvalidateRect(hWndParent,NULL,TRUE);
return TRUE;
}
return FALSE;

}

// “关于”框的消息处理程序。
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;
}

color2.rc资源文件

COLORSCRDLG DIALOG DISCARDABLE 16,16,120,141
STYLE DS_MODALFRAME|WS_POPUP|WS_VISIBLE|WS_CAPTION
CAPTION "Color Scroll Scrollbars"
FONT 8, "MS Sans Serif"
BEGIN
CTEXT	"&Red",IDC_STATIC,8,8,24,8,NOT WS_GROUP
SCROLLBAR	10,8,20,24,100,SBS_VERT|WS_TABSTOP
CTEXT	"0",13,8,124,24,8,NOT WS_GROUP

CTEXT	"&Green",IDC_STATIC,48,8,24,8,NOT WS_GROUP
SCROLLBAR	11,48,20,24,100,SBS_VERT|WS_TABSTOP
CTEXT	"0",14,48,124,24,8,NOT WS_GROUP

CTEXT	"&Blue",IDC_STATIC,89,8,24,8,NOT WS_GROUP
SCROLLBAR	12,89,20,24,100,SBS_VERT|WS_TABSTOP
CTEXT	"0",15,89,124,24,8,NOT WS_GROUP
END

resource.h

#define IDC_STATIC				-1

效果