DirectX SDK安装颜色更改
DirectX SDK installation colour change
我最近在YouTube上学习了一个关于如何在Win32中安装DirectX的教程。当我以前运行它时，我得到了一个白色的窗口。当我在安装DirectX后运行它时，我试图用DirectX更改颜色，但当它应该是青色时，我仍然得到了一个白色窗口。
#include <Windows.h>
#include <iostream>
#include "wtypes.h"
#include "wtypes.h"
#include <d3d11.h>
#include <d3dx11.h>
#include <DxErr.h>
void GetDesktopResolution(int& horizontal, int& vertical)
{
RECT desktop;
const HWND hDesktop = GetDesktopWindow();
GetWindowRect(hDesktop, &desktop);
horizontal = desktop.right;
vertical = desktop.bottom;
}
using namespace std;
HWND windowHandle;
LRESULT CALLBACK WndProc(HWND hwnd, UINT fMsg, WPARAM wParam, LPARAM lParam)
{
switch (fMsg)
{
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_CHAR:
{
if (wParam == VK_ESCAPE)
SendMessage(hwnd, WM_CLOSE, 0, 0);
return 0;
}
default:
return DefWindowProc(hwnd, fMsg, wParam, lParam);
}
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE prevIstance, PSTR cmdLine, int showCmd)
{
int horizontal = 0;
int vertical = 0;
bool success;
int hres = 0;
int vres = 0;
GetDesktopResolution(horizontal, vertical);
if (success = GetDesktopResolution)
{
hres = horizontal - 800;
vres = vertical - 600;
}
const int result = MessageBoxA(0, "Would you like to play in nFull-Screen Mode?", "When the Sun Sets", MB_ICONEXCLAMATION | MB_YESNOCANCEL);
switch (result)
{
case IDYES:
if (result == IDYES)
{
// FIRST WINDOW
WNDCLASSEX fGame;
fGame.cbSize = sizeof(WNDCLASSEX);
fGame.cbClsExtra = 0;
fGame.cbWndExtra = 0;
fGame.hIconSm = 0;
fGame.hInstance = hInstance;
fGame.lpfnWndProc = WndProc;
fGame.style = CS_HREDRAW | CS_VREDRAW;
fGame.lpszClassName = L"WTSS1";
fGame.lpszMenuName = 0;
fGame.hCursor = LoadCursor(0, IDC_ARROW);
fGame.hIcon = LoadIcon(0, IDI_APPLICATION);
fGame.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
RegisterClassEx(&fGame);
windowHandle = CreateWindowEx(WS_MAXIMIZEBOX, L"WTSS1", L"When the Sun Sets", WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 800 + hres, 600 + vres, 0, 0, hInstance, 0);
SetWindowLong(windowHandle, GWL_STYLE, 0);
if (windowHandle == 0)
{
MessageBoxA(0, "Error: The window has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
ShowWindow(windowHandle, showCmd);
UpdateWindow(windowHandle);
HRESULT hResult = S_OK;
ID3D11Device* m_pD3D11Device = 0;
IDXGISwapChain* m_pSwapChain = 0;
ID3D11DeviceContext* m_pD3D11Context = 0;
D3D_FEATURE_LEVEL FeatureLevelsSupported;
D3D_FEATURE_LEVEL FeatureLevelsRequested[] =
{
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
D3D_FEATURE_LEVEL_9_3,
D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1,
};
RECT dimensions;
GetClientRect(windowHandle, &dimensions);
LONG width = dimensions.right - dimensions.left;
LONG height = dimensions.bottom - dimensions.top;
DXGI_SWAP_CHAIN_DESC sd;
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = 1;
sd.BufferDesc.Width = static_cast<unsigned int>(width);
sd.BufferDesc.Height = static_cast<unsigned int>(height);
sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.BufferDesc.RefreshRate.Numerator = 60;
sd.BufferDesc.RefreshRate.Denominator = 1;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.OutputWindow = windowHandle;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.Windowed = TRUE;
hResult = D3D11CreateDeviceAndSwapChain(NULL,
D3D_DRIVER_TYPE_HARDWARE,
NULL,
0,
FeatureLevelsRequested,
3,
D3D11_SDK_VERSION,
&sd,
&m_pSwapChain,
&m_pD3D11Device,
&FeatureLevelsSupported,
&m_pD3D11Context);
if (FAILED(hResult))
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
ID3D11RenderTargetView* m_pBackBufferTarget = 0;
ID3D11Texture2D* backBufferTexture;
hResult = m_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&backBufferTexture);
if (FAILED(hResult))
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
hResult = m_pD3D11Device->CreateRenderTargetView(backBufferTexture, 0, &m_pBackBufferTarget);
if (backBufferTexture)
{
backBufferTexture->Release();
backBufferTexture = 0;
}
if (FAILED(hResult))
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
m_pD3D11Context->OMSetRenderTargets(1, &m_pBackBufferTarget, 0);
D3D11_VIEWPORT vp;
vp.Width = static_cast<float>(width);
vp.Height = static_cast<float>(height);
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
m_pD3D11Context->RSSetViewports(1, &vp);
if (m_pD3D11Context == 0)
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
float clearColor[4] = { 0.0f, 135/225.0f, 189/225.0f, 1.0f };
m_pD3D11Context->ClearRenderTargetView(m_pBackBufferTarget, clearColor);
m_pSwapChain->Present( 0, 0 );
MSG fMsg;
SecureZeroMemory(&fMsg, sizeof(MSG));
int fReturnValue = 0;
while ((fReturnValue = GetMessage(&fMsg, 0, 0, 0)) != 0)
{
if (fReturnValue == -1)
{
MessageBoxA(windowHandle, "Error: The window has been configured incorrectly.", "When the Sun Sets", 0);
}
TranslateMessage(&fMsg);
DispatchMessage(&fMsg);
}
if (m_pBackBufferTarget)
{
m_pBackBufferTarget->Release();
m_pBackBufferTarget = 0;
}
if (m_pSwapChain)
{
m_pSwapChain->Release();
m_pSwapChain = 0;
}
if (m_pD3D11Context)
{
m_pD3D11Context->Release();
m_pD3D11Context = 0;
}
if (m_pD3D11Device)
{
m_pD3D11Device->Release();
m_pD3D11Device = 0;
}
}
break;
它明确指出：
float clearColor[4] = { 0.0f, 135/225.0f, 189/225.0f, 1.0f };
m_pD3D11Context->ClearRenderTargetView(m_pBackBufferTarget, clearColor);
m_pSwapChain->Present( 0, 0 );
哪个窗口应该是青色的，不是吗？
提前感谢！
我试了一下代码，它对我有效。我得到了一个青色的窗口。但是，由于只调用Present一次，它不会（完全）保持青色。通过调用DefWindowProc，您的WndProc将擦除需要使用窗口背景笔刷重新绘制的窗口部分，您将其设置为(HBRUSH)(COLOR_WINDOW + 1)。
要解决这个问题，你需要做两件事。首先将fGame.hbrBackground设置为0，使WndProc不再擦除窗口。接下来，更改消息循环，使其类似于以下内容（改编自MSDN示例）：
bool bGotMsg;
MSG msg;
msg.message = WM_NULL;
PeekMessage(&msg, NULL, 0U, 0U, PM_NOREMOVE);
while (WM_QUIT != msg.message)
{
// Process window events.
// Use PeekMessage() so we can use idle time to render the scene.
bGotMsg = (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE) != 0);
if (bGotMsg)
{
// Translate and dispatch the message
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else
{
Render();
}
}
您需要将渲染窗口的代码，即应该使其变成青色的部分，移动到上面示例中显示Render()的位置。具体地，对ClearRenderTargetView和Present的调用。您可以将Render()替换为对这两个函数的调用，也可以将它们移动到一个名为Render的函数中。
此外，if (success = GetDesktopResolution)行并没有做你显然认为它会做的事情。它为success分配一个指向GetDesktopResolution的函数指针，并且总是计算为true。您应该让GetDesktopResolution返回一个值（而不是void），具体取决于GetDesktopWindow还是GetWindowRect失败，然后检查该值是否失败。
相关文章：
- 在Ubuntu 16.04上安装Cilk时出现问题
- 将"打开的CV图像"中的"颜色"转换为整数格式
- 在CMakeLists.txt的安装功能中使用.cmake文件有什么用
- C++:如何在CLion IDE中安装Boost
- 如何在内核C++中使用1920x1080x16M图形或类似的16M颜色?(VGA）
- 如何在24位SDL_Surface上设置像素的颜色
- 安装opencv失败-粘贴CMakeError.log的内容
- 如何从SDL_Surface获取特定像素的颜色
- 在cygwin中测试新的boost安装时出现cpp错误
- 有人安装"IITB Simplecpp in mac"吗？
- 我可以在 Arduino 的库文件夹之外安装库吗?
- Mingw-64 在构建和安装后不会编译 openCV 代码
- 为什么构建目录中新构建的共享库与安装目录中的副本具有不同的依赖项集?
- 安装 libc++ 时出现问题
- 安装MinGW后C++编译器不起作用？
- 列表视图更改选择颜色
- GtkTreeView 交替行颜色
- 介子复制/安装头文件到输出目录并保持文件夹结构
- 无法安装 R 包 "nloptr"(Ubuntu 16.04 上的 R3.6.2) - C++编译器问题
- DirectX SDK安装颜色更改
