ClientSize in C++

[Matt1745]

Hello everyone, I am returning to C++ to start programming some games again, and I don't know how to set the ClientSize of a form from this context. Here is the source code...

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

const int XRESOLUTION = 640;
const int YRESOLUTION = 480;

LPDIRECT3D9 g_pDirect3D = NULL;
LPDIRECT3DDEVICE9 g_pDirect3D_Device = NULL;

LRESULT WINAPI WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInst, LPSTR lpCmdLine, int nShow) {
	MSG msg;
	WNDCLASSEX wc = {sizeof(WNDCLASSEX), CS_VREDRAW|CS_HREDRAW|CS_OWNDC, WndProc, 0, 0, hInstance, NULL, NULL, (HBRUSH)(COLOR_WINDOW+1), NULL, "DX9_TUTORIAL1_CLASS", NULL};
	RegisterClassEx(&wc);
	// this sets the form size including the borders
	HWND hMainWnd = CreateWindow("DX9_TUTORIAL1_CLASS", "DirectX 9 Bare Bones Tutorial 1", WS_OVERLAPPEDWINDOW, 100, 100, 300, 6, NULL, NULL, hInstance, NULL);
	// here I would fix the ClientSize, if I knew how... and maybe a CenterToScreen() call, but I can't get that to work either

	// create the DirectX device(s)
	g_pDirect3D = Direct3DCreate9(D3D_SDK_VERSION);
	D3DPRESENT_PARAMETERS PresentParams;
	memset(&PresentParams, 0, sizeof(D3DPRESENT_PARAMETERS));
	PresentParams.Windowed = true;
	PresentParams.SwapEffect = D3DSWAPEFFECT_DISCARD;
	g_pDirect3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hMainWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &PresentParams, &g_pDirect3D_Device);

	ShowWindow(hMainWnd, nShow);
	UpdateWindow(hMainWnd);

	while(GetMessage(&msg, NULL, 0, 0)) {
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return 0;
}

LRESULT WINAPI WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
	switch(msg) {
		case WM_DESTROY:
			g_pDirect3D_Device->Release();
			g_pDirect3D->Release();
			PostQuitMessage(0);
			return 0;
	}
	return DefWindowProc(hwnd, msg, wParam, lParam);
}

void prepareScene() {
	g_pDirect3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 255), 1.0f, 0);
}

void finishScene() {
	g_pDirect3D_Device->Present(NULL, NULL, NULL, NULL);
}

Another less important question: Why is the IntelliSense with the 2008 Visual C++ Express Edition environment so much slower (or completely non responsive) as opposed to the C# version?

[dargueta]

It's got a lot more libraries to dig through is my guess. Anyway, I think the client size is set when calling the CreateWindowEx function. Look at the MSDN Documentation for the argument order.

[Matt1745]

The window size parameters for the CreateWindowEx method are for the window size, and not the client size. Also, it doesn't look like I have access to any variables inside of the HWND object.

[dargueta]

HWND is actually a pointer, not really an object. I think I found the solution you want here, but I'm not entirely sure that that's what you want. What version of C++ are you using? .NET or older? More importantly - are you using MFC?