ResizeDlg

Visual C++ 2005 Express Edition
Windows Server 2003 SP1 Platform SDK
Windowsアプリケーション / 空のプロジェクト

// マルチバイト文字セット

#include <windows.h>
#include "resource.h"

#define CLASS_WINDOW1	"Window1"

// グローバル変数
static HINSTANCE	g_hInstance;
static HWND			g_hWindow1;
static int			g_iWindow1Y;

// プロトタイプ宣言
INT_PTR CALLBACK DlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
void OnSize(HWND hDlg);
void OnGetMinMaxInfo(LPARAM lParam);
void OnInitDialog(HWND hDlg);
void CenterWindow(HWND hWnd);
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(
	HINSTANCE	hInstance,
	HINSTANCE	hPrevInstance,
	LPSTR		lpCmdLine,
	int			nCmdShow)
{
	WNDCLASSEX	wcex;

g_hInstance = hInstance;

wcex.cbSize			= sizeof(WNDCLASSEX);
	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= NULL;
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW + 1);
	wcex.lpszMenuName	= NULL;
	wcex.lpszClassName	= CLASS_WINDOW1;
	wcex.hIconSm		= NULL;
	RegisterClassEx(&wcex);

DialogBox(hInstance, MAKEINTRESOURCE(IDD_MAIN_DIALOG), NULL, DlgProc);
	return 0;
}

INT_PTR CALLBACK DlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	BOOL	bRetVal = TRUE;

switch (uMsg) {
	case WM_COMMAND:
		switch (LOWORD(wParam)) {
		case IDC_BUTTON1:
			MessageBox(hDlg, "hello, world", "Hello", MB_OK);
			break;
		}
		break;
	case WM_SIZE:
		OnSize(hDlg);
		break;
	case WM_GETMINMAXINFO:
		OnGetMinMaxInfo(lParam);
		break;
	case WM_INITDIALOG:
		OnInitDialog(hDlg);
		bRetVal = TRUE;	// TRUEならデフォルトフォーカスを使用
		break;
	case WM_CLOSE:
		EndDialog(hDlg, IDOK);
		break;
	default:
		bRetVal = FALSE;
	}
	return bRetVal;
}

void OnSize(HWND hDlg)
{
	RECT	rc;
	int		iWidth;
	int		iHeight;

GetClientRect(hDlg, &rc);
	iWidth	= rc.right - 8;
	iHeight	= rc.bottom - (g_iWindow1Y + 4);
	MoveWindow(g_hWindow1, 4, g_iWindow1Y, iWidth, iHeight, TRUE);
}

void OnGetMinMaxInfo(LPARAM lParam)
{
	MINMAXINFO	*pmmi;

pmmi = (MINMAXINFO*)lParam;
	pmmi->ptMinTrackSize.x = 480;
	pmmi->ptMinTrackSize.y = 240;
}

void OnInitDialog(HWND hDlg)
{
	RECT	rc;
	int		iDluY;

// 中央
	CenterWindow(hDlg);

// DLU
	rc.top	= 8;
	MapDialogRect(hDlg, &rc);
	iDluY	= rc.top;
	g_iWindow1Y = (40 * iDluY) / 8;

g_hWindow1 = CreateWindow(CLASS_WINDOW1, NULL,
		WS_CHILD | WS_VISIBLE | WS_HSCROLL,
		0, 0, 0, 0, hDlg, 0, g_hInstance, NULL);

OnSize(hDlg);
}

void CenterWindow(HWND hWnd)
{
	RECT	rcParent;
	RECT	rcThis;
	int		iWidth;
	int		iHeight;

GetWindowRect(GetDesktopWindow(), &rcParent);
	GetWindowRect(hWnd, &rcThis);
	iWidth	= rcThis.right - rcThis.left;
	iHeight	= rcThis.bottom - rcThis.top;
	MoveWindow(hWnd,
		(rcParent.right - iWidth) / 2, (rcParent.bottom - iHeight) / 2,
		iWidth, iHeight, FALSE);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg) {
	default:
		return DefWindowProc(hWnd, uMsg, wParam, lParam);
	}
	return 0;
}

resource.h

ResizeDlg.rc