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[編輯] 注意：這些項目是我已複製和重命名的項目。不知道這是否與它有任何關係。加載圖像僅在可執行文件打開時才起作用
我正在使用directx sdk，只是玩弄它。我試圖通過加載外部文件將圖像粘貼到屏幕上。出於某種原因，當我構建它並在調試中運行時，它不起作用。但是，如果我去調試文件夾並打開exe文件。有用。我不知道爲什麼。這裏是我的代碼
#include <windows.h>
#include <d3d9.h>
#include <d3dx9.h>
#include <time.h>
#include <iostream>
using namespace std;
#pragma comment(lib,"d3d9.lib")
#pragma comment(lib, "d3dx9.lib")
const string APPTITLE = "Game Loop";
const int SCREENW = 1024;
const int SCREENH = 768;
bool gameover = false;
LPDIRECT3D9 d3d = NULL;
LPDIRECT3DDEVICE9 d3ddev = NULL;
LPDIRECT3DSURFACE9 surface = NULL;
LPDIRECT3DSURFACE9 backbuffer = NULL;
#define KEY_DOWN(vk_code)((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0)
bool Game_Init(HWND window)
{
MessageBox(window, "Game_Init", "BREAKPOINT",0);
//Initialize
d3d = Direct3DCreate9(D3D_SDK_VERSION);
if(d3d == NULL)
{
MessageBox(window, "Error Initializing", "ERROR",MB_OK);
return 0;
}
D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
d3dpp.BackBufferCount = 1;
d3dpp.BackBufferWidth = SCREENW;
d3dpp.BackBufferHeight = SCREENH;
d3dpp.hDeviceWindow = window;
d3dpp.Windowed = TRUE;
d3d->CreateDevice(
D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL,
window,
D3DCREATE_SOFTWARE_VERTEXPROCESSING,
&d3dpp,
&d3ddev
);
if(d3ddev == NULL)
{
MessageBox(window, "Error Creating Device", "ERROR",MB_OK);
return 0;
}
srand(time(NULL));
d3ddev->Clear(0,NULL,D3DCLEAR_TARGET, D3DCOLOR_XRGB(0,255,0), 1.0f,0);
d3ddev->GetBackBuffer(0,0,D3DBACKBUFFER_TYPE_MONO, &backbuffer);
HRESULT result = d3ddev->CreateOffscreenPlainSurface(
SCREENW,SCREENH,
D3DFMT_X8R8G8B8,
D3DPOOL_DEFAULT,
&surface,
NULL);
if(!SUCCEEDED(result)) return false;
result = D3DXLoadSurfaceFromFile(
surface,
NULL,NULL,
"legotron.bmp",
NULL,
D3DX_DEFAULT,
0,
NULL);
if(!SUCCEEDED(result))
{
MessageBox(window, "Error Loading Image", "ERROR",MB_OK);
return false;
}
return true;
}
void Game_Run(HWND hwnd)
{
if(!d3ddev) return;
d3ddev->GetBackBuffer(0,0,D3DBACKBUFFER_TYPE_MONO, &backbuffer);
if(d3ddev->BeginScene())
{
d3ddev->StretchRect(surface, NULL, backbuffer, NULL, D3DTEXF_NONE);
d3ddev->EndScene();
d3ddev->Present(NULL,NULL,NULL,NULL);
}
if(KEY_DOWN(VK_ESCAPE))
PostMessage(hwnd, WM_DESTROY,0,0);
}
void Game_End(HWND hwnd)
{
if(surface) surface->Release();
if(d3ddev)d3ddev->Release();
if(d3d)d3d->Release();
}
LRESULT CALLBACK WinProc(HWND hWnd, UINT message, WPARAM WParam, LPARAM lparam)
{
switch(message)
{
case WM_DESTROY:
gameover = true;
PostQuitMessage(0);
return 0;
break;
}
return DefWindowProc(hWnd, message, WParam, lparam);
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
//set the new windows properties
WNDCLASSEX wc;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC) WinProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName= APPTITLE.c_str();
wc.hIconSm = NULL;
RegisterClassEx(&wc);
HWND window = CreateWindow(
APPTITLE.c_str(),
APPTITLE.c_str(),
WS_OVERLAPPED,
CW_USEDEFAULT, CW_USEDEFAULT,
SCREENW,SCREENH,
NULL,
NULL,
hInstance,
NULL);
if(window == 0) return 0;
//display the window
ShowWindow(window, nCmdShow);
UpdateWindow(window);
//initialize the game
if(!Game_Init(window)) return 0;
MSG message;
//main message loop
while(!gameover)
{
if(PeekMessage(&message,NULL, 0, 0,PM_REMOVE))
{
TranslateMessage(&message);
DispatchMessage(&message);
}
Game_Run(window);
}
Game_End(window);
return message.wParam;
}
我有它，它關閉應用程序，如果圖像加載失敗。
result = D3DXLoadSurfaceFromFile(
surface,
NULL,NULL,
"legotron.bmp",
NULL,
D3DX_DEFAULT,
0,
NULL);
if(!SUCCEEDED(result))
{
MessageBox(window, "Error Loading Image", "ERROR",MB_OK);
return false;
}
如果我刪除了返回false行，窗口保持打開狀態（但沒有圖像）。顯然它失敗了。該圖像與.exe文件（在調試文件夾內）位於同一文件夾中，因爲它應該如此。因爲我曾經竭盡全力告訴它去別的地方去。當我親自打開調試文件夾中的.exe文件時，它仍然有效。但是當我構建它並嘗試運行時，它在IDE中不起作用。
[編輯]
我建立從零開始應用程序並運行它。仍然沒有工作。
您的IDE可能有一個您不知道的默認文件位置。您是否嘗試將該文件調用爲「。\\ legotron.bmp」？ – 2010-02-23 17:42:07