我正在编写 Frank Luna 的“DirectX 10 3D 游戏编程简介”一书中的示例代码。该代码是附录 A:Windows 编程部分中的第一个 Win32 示例。
现在,程序在 VC++ 2008/2010 下编译,但没有出现任何窗口,尽管调试会话已经开始,我必须强行关闭它。我不知道它在哪里,我没有使用 Win32 控制台模式,我已经关闭了所有其他窗口并且没有其他 IDE 或 VC++ 会话正在运行。
知道为什么会发生这种情况吗?
PS:我还检查了我的流程。它确实在运行。
#include <Windows.h>
HWND ghMainWnd = 0;
bool InitWindowsApp(HINSTANCE instanceHandle, int show);
int Run();
LRESULT CALLBACK
WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
int WINAPI
WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR pCmdLine, int nShowCmd )
{
if( !InitWindowsApp(hInstance, nShowCmd) )
return 0;
return Run();
}
bool InitWindowsApp( HINSTANCE instanceHandle, int show )
{
WNDCLASS wc;
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = instanceHandle;
wc.hIcon = LoadIcon(0, IDI_APPLICATION);
wc.hCursor = LoadCursor(0, IDC_ARROW );
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = 0;
wc.lpszClassName = L"BasicWndClass";
if( !RegisterClass(&wc) )
{
MessageBox(0, L"RegisterClass FAILED", 0, 0);
return false;
}
ghMainWnd = CreateWindow(
L"BasicWndClass",
L"Win32Basic",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
0,
0,
instanceHandle,
0);
if( ghMainWnd = 0 )
{
MessageBox( 0, L"Window Creation FAILED", 0, 0 );
return false;
}
ShowWindow( ghMainWnd, show );
UpdateWindow( ghMainWnd );
return true;
}
int Run()
{
MSG msg = {0};
BOOL bRet = 1;
while( bRet = GetMessage( &msg, 0, 0, 0 ) != 0 )
{
if( bRet == -1 )
{
MessageBox( 0, L"GetMessage FAILED", 0, 0 );
break;
}
else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int)msg.wParam;
}
LRESULT CALLBACK
WndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam )
{
switch( msg )
{
case WM_LBUTTONDOWN:
MessageBox( 0, L"Hello, World", 0, 0 );
return 0;
case WM_KEYDOWN:
if( wParam == VK_ESCAPE )
DestroyWindow( ghMainWnd );
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}