WinAPI_Basic_templates/WinApiSamplerOpenFileDialog/main.cpp - main - sxfour/cpp_winapi_all_projects

WinAPI_Basic_templates/WinApiSamplerOpenFileDialog/main.cpp
76 строк3 KB
Egor Levashov
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26 апр 2024, 18:00
26 апр 2024, 18:00cc5c3d8
#pragma comment(linker,"\"/manifestdependency:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

#include <map>
#include <string>
#include <Windows.h>
#include <CommCtrl.h>
#include <ShlObj.h>

using namespace std;
using namespace std::literals;

HWND window = nullptr;
HWND button1 = nullptr;
HWND staticText1 = nullptr;
WNDPROC defWndProc = nullptr;
wstring selectedFile;

LRESULT OnWindowClose(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
	PostQuitMessage(0);

	return CallWindowProc(defWndProc, hWnd, message, wParam, lParam);
}

LRESULT OnButtonClick(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
	wchar_t iInitialDirectory[MAX_PATH];
	SHGetSpecialFolderPath(nullptr, iInitialDirectory, CSIDL_DESKTOP, false);

	OPENFILENAME openFileName = { 0 };
	openFileName.lStructSize = sizeof(openFileName);
	openFileName.hwndOwner = hWnd;
	openFileName.lpstrFilter = L"Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*";
	openFileName.nFilterIndex = 1;

	std::wstring fileName(MAX_PATH, ' ');
	lstrcpyW(fileName.data(), selectedFile.c_str());
	openFileName.lpstrFile = (LPWSTR)fileName.c_str();
	openFileName.nMaxFile = MAX_PATH;
	openFileName.lpstrInitialDir = iInitialDirectory;
	openFileName.Flags = OFN_EXPLORER;
	openFileName.lpstrDefExt = L"txt";

	BOOL result = GetOpenFileName(&openFileName);
	if (result) {
		selectedFile = fileName;
		SendMessage(staticText1, WM_SETTEXT, 0, reinterpret_cast<LPARAM>((L"File = "s + selectedFile).c_str()));
	}

	return CallWindowProc(defWndProc, hWnd, message, wParam, lParam);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
	if (message == WM_CLOSE && hWnd == window) {
		return OnWindowClose(hWnd, message, wParam, lParam);
	}
	if (message == WM_COMMAND && HIWORD(wParam) == BN_CLICKED && reinterpret_cast<HWND>(lParam) == button1) {
		return OnButtonClick(hWnd, message, wParam, lParam);
	}

	return CallWindowProc(defWndProc, hWnd, message, wParam, lParam);
}

int main() {
	window = CreateWindowEx(0, WC_DIALOG, L"Open file dialod Example", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 300, 300, nullptr, nullptr, nullptr, nullptr);
	button1 = CreateWindowEx(0, WC_BUTTON, L"Open...", WS_CHILD | WS_VISIBLE, 10, 10, 80, 25, window, nullptr, nullptr, nullptr);
	staticText1 = CreateWindowEx(0, WC_STATIC, L"File = ", WS_CHILD | WS_VISIBLE, 10, 45, 200, 215, window, nullptr, nullptr, nullptr);

	defWndProc = reinterpret_cast<WNDPROC>(SetWindowLongPtr(window, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(WndProc)));
	ShowWindow(window, SW_SHOW);

	MSG message = { 0 };
	while (GetMessage(&message, nullptr, 0, 0)) {
		DispatchMessage(&message);
	}

	return 0;
}