请教各位达人这段代码的含义

2007-08-13 01:07:39 190 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

一文搞定 GitHub SSH Key：生成、配置、好处全攻略本文详细介绍了如何配置GitHub SSH Key，实现免密安全认证。主要内容包括：SSH协议的四大优势（免密登录、安全性高、稳定省心、支持自动化）；Git身份配置步骤；检查本地SSH Key；生成RSA密钥对；添加密钥到SSH代理；复制公钥到GitHub；测试连接。配置完成后，开发者可通过SSH地址克隆仓库，实现push/pull全程免密操作。该方案显著提升Git使用效率，同时保障安全性，是开发者必备技能。阅读详情

LRESULT CALLBACK CVisualExt::WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
CVisualExt* ext = (CVisualExt*)::GetWindowLong(hwnd, GWL_USERDATA);

switch(uMsg)
{
case WM_CREATE:
return 0;

case WM_SIZE:
return 0;

case WM_COMMAND:
return 0;

case WM_ERASEBKGND:
return 1;

case WM_PAINT:
{
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);

RECT rc;
GetClientRect(hwnd, &rc);

HDC lmemdc = CreateCompatibleDC(hdc);
HBITMAP hmembmp = CreateCompatibleBitmap(hdc, rc.right - rc.left, rc.bottom - rc.top);
HBITMAP oldbmp = (HBITMAP)SelectObject(lmemdc, hmembmp);

memdc = lmemdc;

ext->TriggerEvent("onpaint");

BitBlt(hdc, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, lmemdc, 0, 0, SRCCOPY);

SelectObject(lmemdc, oldbmp);
DeleteObject(hmembmp);
DeleteDC(lmemdc);
EndPaint(hwnd, &ps);
return 0;
}
}

return DefWindowProc(hwnd, uMsg, wParam, lParam);
}

...全文