win32のウィンドウが上のバー(ウィンドウ名と３つのボタン)しか出ない

Question

ひとつ前の質問のを進めていたところ　https://youtu.be/Il6jySpR3VI　の31:09であったり、46:27（ここまでは打ちました。）であったり、ウィンドウが、これしか出ません。どうしてなのでしょうか。。。
コードも載せておきます。長いですすみません。

WinMain.cpp

#include<windows.h>
#include"D3DApp.h"

class testApp :public d3DApp {
public:
	//Constructor
	testApp(HINSTANCE hInstance);
	//Destructor
	~testApp();

	//Methods

	bool init() override;
	void update(float dt) override;
	void render() override;
}; 

testApp::testApp(HINSTANCE hInstance) :d3DApp(hInstance) {

}

testApp::~testApp() {

}

bool testApp::init() {
	if (!d3DApp::init()) {
		return false;
	}

	return true;
}

void testApp::update(float dt) {

}

void testApp::render() {
	m_pDevice3D->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 255, 0), 1.0f, 0);

	m_pDevice3D->Present(0, 0, 0, 0);
}

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

	testApp* tApp = new testApp(hInstance);

	if (!tApp->init()) {
		return 1;
	}

	return tApp->run();

}

D3DApp.h

#include<windows.h>
#include<d3d9.h>
#include<d3dx9.h>

class d3DApp {
public:
	//Constructor
	d3DApp(HINSTANCE hInstance);

	//destructor
	virtual ~d3DApp();

	//Main application loop
	int run();

	//Framework methods
	virtual bool init();
	virtual void update(float dt) = 0;
	virtual void render() = 0;
	LRESULT msgProc(HWND hwnd, UINT msg, WPARAM aParam, LPARAM lParam);

protected:
	//Attributes
	HWND         m_hAppWindow;
	HINSTANCE    m_hAppInstance;
	unsigned int m_uiClientWidth;
	unsigned int m_uiClientHeight;
	LPCWSTR      m_sAppTitle;
	DWORD        m_WindowStyle;

	//DirectX Attributes
	IDirect3D9*           m_pDirect3D;
	IDirect3DDevice9*     m_pDevice3D;
	D3DPRESENT_PARAMETERS m_d3dpp;
	

	//methods

	//Initialize the app window
	bool initWindow();

	//Initialize Direct3D
	bool initDirect3D();
};

D3DApp.cpp

#include"D3DApp.h"

namespace {
	//Create a global pointer to d3DApp
	d3DApp* g_pd3DApp;
}

LRESULT CALLBACK MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
	//Foward the messages
	return g_pd3DApp->msgProc(hwnd, msg, wParam, lParam);
}

d3DApp::d3DApp(HINSTANCE hInstance) {
	m_hAppInstance = hInstance;
	m_hAppWindow = NULL;
	m_uiClientWidth = 800;
	m_uiClientHeight = 600;
	m_sAppTitle = (LPCWSTR)TEXT("DIRECTX9 App");
	m_WindowStyle = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX;
	g_pd3DApp = this;
}

d3DApp::~d3DApp() {
	//Release object from memory
}

int d3DApp::run() {
	//Main message loop
	MSG msg = { 0 };
	while (WM_QUIT != msg.message) {
		if (PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE)) {
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		} else {
			//Update
			update(0.0f);
			//Render
			render();
		}
	}

	return static_cast<int>(msg.wParam);

}

bool d3DApp::init() {
	//Check window creation
	if (!initWindow()) {
		return false;
	}

	//Check Direct3D initilization
	if (!initDirect3D()) {
		return false;
	}

	return true;
}

bool d3DApp::initWindow() {
	//Create WNDCLASS
	WNDCLASSEX wcex;
	static LPCWSTR classNameLPCWSTR = (LPCWSTR)TEXT("D3DAPPWNDCLASS");
	ZeroMemory(&wcex, sizeof(WNDCLASSEX));
	wcex.cbClsExtra = 0;
	wcex.cbWndExtra = 0;
	wcex.cbSize = sizeof(WNDCLASSEX);
	wcex.style = CS_HREDRAW | CS_VREDRAW;
	wcex.hInstance = m_hAppInstance;
	wcex.lpfnWndProc = MainWndProc;
	wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
	wcex.lpszMenuName = NULL;
	wcex.lpszClassName = classNameLPCWSTR;
	wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);

	//Register that class
	if (!RegisterClassEx(&wcex)) {
		MessageBox(NULL, (LPCWSTR)TEXT("Failed to register window class"), NULL, NULL);
		return false;
	}

	//Cache requested width, height
	RECT r = { 0,0,m_uiClientWidth,m_uiClientHeight };
	AdjustWindowRect(&r, m_WindowStyle, false);
	int width = r.right - r.left;
	int height = r.top - r.bottom;

	//Create the window
	m_hAppWindow = CreateWindow(
		(LPCWSTR)TEXT("D3DAPPWNDCLASS"),
		m_sAppTitle,
		m_WindowStyle,
		GetSystemMetrics(SM_CXSCREEN) / 2 - width / 2,
		GetSystemMetrics(SM_CYSCREEN) / 2 - height / 2,
		width,
		height,
		NULL,
		NULL,
		m_hAppInstance,
		NULL);

	//Check if window was created
	if (!m_hAppWindow) {
		MessageBox(NULL, (LPCWSTR)TEXT("Failed to create window"), NULL, NULL);
		return false;
	}

	//Show the window
	ShowWindow(m_hAppWindow, SW_SHOW);

	return true;
}

bool d3DApp::initDirect3D() {

	//Get interface to Direct3D
	m_pDirect3D = Direct3DCreate9(D3D_SDK_VERSION);
	if (!m_pDirect3D) {
		MessageBox(NULL, (LPCWSTR)TEXT("Failed to create direct3D com object"), NULL, NULL);
		return false;
	}

	//Check divice capabilities
	D3DCAPS9 m_d3dDevCaps;
	m_pDirect3D->GetDeviceCaps(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, &m_d3dDevCaps);

	int vp;
	if (m_d3dDevCaps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) {
		vp = D3DCREATE_HARDWARE_VERTEXPROCESSING;
	}
	else {
		vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
	}

	//Fill out the present parameters
	ZeroMemory(&m_d3dpp, sizeof(D3DPRESENT_PARAMETERS));
	m_d3dpp.BackBufferWidth = m_uiClientWidth;
	m_d3dpp.BackBufferHeight = m_uiClientHeight;
	m_d3dpp.Windowed = true;
	m_d3dpp.BackBufferCount = 1;
	m_d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8;
	m_d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
	m_d3dpp.MultiSampleQuality = 0;
	m_d3dpp.hDeviceWindow = m_hAppWindow;
	m_d3dpp.Flags = 0;
	m_d3dpp.EnableAutoDepthStencil = true;
	m_d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8;
	m_d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
	m_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
	m_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;

	//Create the device
	m_pDirect3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, m_hAppWindow, vp, &m_d3dpp, &m_pDevice3D);
	if (!m_pDevice3D) {
		MessageBox(NULL, (LPCWSTR)TEXT("Failed device creation"), NULL, NULL);
		return false;
	}



	return true;
}

LRESULT d3DApp::msgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
	switch (msg) {
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}

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

まだまだ初心者ですみませんが、よろしくお願いします

Answer 1

	int height = r.top - r.bottom;

これが、こうですね。

	int height = r.bottom - r.top;

Comments

[Negligible-n]

家に帰ったら試してみます！ありがとうございます!