怎么通过句柄给窗口设置图片，并且后面不要让这张图片被刷新掉-Go服务器开发

要通过句柄给窗口设置图片，并确保该图片不会被刷新掉，可以使用窗口的WM_PAINT消息来绘制图像。

下面是一个示例代码，展示如何在窗口中绘制一张静态图片：

#include <windows.h>
LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
int main()
{
    // 创建窗口类注册
    WNDCLASSEX wc = { 0 };
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc = WindowProc;
    wc.hInstance = GetModuleHandle(NULL);
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.lpszClassName = L"MyWindowClass";
    
    RegisterClassEx(&wc);
    
    // 创建窗口
	HWND hwnd = CreateWindowEx(
        0,
        L"MyWindowClass",
        L"窗口标题",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
        NULL,
        NULL,
        GetModuleHandle(NULL),
        NULL
	);
	if (hwnd == NULL)
		return 0;
	// 显示窗口
	ShowWindow(hwnd, SW_SHOWDEFAULT);
	UpdateWindow(hwnd);
	// 消息循环
	MSG msg;
	while (GetMessage(&msg, nullptr, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return static_cast<int>(msg.wParam);
}
LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg)
	{
	case WM_PAINT:
	{
		PAINTSTRUCT ps;
		HDC hdc = BeginPaint(hwnd, &ps);
		// 在绘制区域绘制图片
        HBITMAP hBitmap = static_cast<HBITMAP>(LoadImage(NULL,
                                                        L"path_to_image_file.bmp",
                                                        IMAGE_BITMAP,
                                                        0, 0,
                                                        LR_LOADFROMFILE));
        if (hBitmap != NULL)
        {
            HDC hdcMem = CreateCompatibleDC(hdc);
            HGDIOBJ hOldBitmap = SelectObject(hdcMem, hBitmap);
            // 获取图片的尺寸
            BITMAP bm;
            GetObject(hBitmap, sizeof(bm), &bm);
            int width = bm.bmWidth;
            int height = bm.bmHeight;
            // 将图片绘制到窗口客户区
            BitBlt(hdc, 0, 0, width, height, hdcMem, 0, 0, SRCCOPY);
            // 清理资源
            SelectObject(hdcMem, hOldBitmap);
            DeleteDC(hdcMem);
        }
		EndPaint(hwnd, &ps);
		break;
    }
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hwnd, uMsg, wParam, lParam);
	}
	return 0;
}