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[C++] Screenshot Resolution Question
Posted:
[C++] Screenshot Resolution QuestionPosted:
Status: Offline
Joined: Jan 16, 201212Year Member
Posts: 20,271
Reputation Power: 17066
Motto: 2b || !2b
Motto: 2b || !2b
Status: Offline
Joined: Jan 16, 201212Year Member
Posts: 20,271
Reputation Power: 17066
Motto: 2b || !2b
Right, I have been having trouble recently where my screen capture program can only capture to the resolution of 2560x1440. I am trying to capture screenshots at 4K (3840x2160). According to Potion the source files have nothing to do with it. So I can only assume this is a Windows error?
I am using the original Gyazo source files. It's all working, but am just having the one trouble listed above. So I'm not sure if i have to edit anything inside Windows as Gyazo has an installer and that works flawlessly at 4K.
I am really stuck and was wondering if any Wizards on here do.
If you need anymore info, please just let me know.
I am using the original Gyazo source files. It's all working, but am just having the one trouble listed above. So I'm not sure if i have to edit anything inside Windows as Gyazo has an installer and that works flawlessly at 4K.
I am really stuck and was wondering if any Wizards on here do.
If you need anymore info, please just let me know.
#include "stdafx.h"
#include "gyazowin.h"
HINSTANCE hInst;
TCHAR *szTitle = _T("Gyazo");
TCHAR *szWindowClass = _T("GYAZOWIN");
TCHAR *szWindowClassL = _T("GYAZOWINL");
HWND hLayerWnd;
int ofX, ofY;
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK LayerWndProc(HWND, UINT, WPARAM, LPARAM);
int GetEncoderClsid(const WCHAR* format, CLSID* pClsid);
BOOL isPng(LPCTSTR fileName);
VOID drawRubberband(HDC hdc, LPRECT newRect, BOOL erase);
VOID execUrl(const char* str);
VOID setClipBoardText(const char* str);
BOOL convertPNG(LPCTSTR destFile, LPCTSTR srcFile);
BOOL savePNG(LPCTSTR fileName, HBITMAP newBMP);
BOOL uploadFile(HWND hwnd, LPCTSTR fileName);
std::string getId();
BOOL saveId(const WCHAR* str);
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
MSG msg;
TCHAR szThisPath[MAX_PATH];
DWORD sLen;
sLen = GetModuleFileName(NULL, szThisPath, MAX_PATH);
for(unsigned int i = sLen; i >= 0; i--) {
if(szThisPath[i] == _T('\\')) {
szThisPath[i] = _T('\0');
break;
}
}
SetCurrentDirectory(szThisPath);
if ( 2 == __argc )
{
if (isPng(__targv[1])) {
uploadFile(NULL, __targv[1]);
}else {
TCHAR tmpDir[MAX_PATH], tmpFile[MAX_PATH];
GetTempPath(MAX_PATH, tmpDir);
GetTempFileName(tmpDir, _T("gya"), 0, tmpFile);
if (convertPNG(tmpFile, __targv[1])) {
uploadFile(NULL, tmpFile);
} else {
MessageBox(NULL, _T("Cannot convert this image"), szTitle,
MB_OK | MB_ICONERROR);
}
DeleteFile(tmpFile);
}
return TRUE;
}
MyRegisterClass(hInstance);
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (int) msg.wParam;
}
BOOL isPng(LPCTSTR fileName)
{
unsigned char pngHead[] = { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
unsigned char readHead[8];
FILE *fp = NULL;
if (0 != _tfopen_s(&fp, fileName, _T("rb")) ||
8 != fread(readHead, 1, 8, fp)) {
return FALSE;
}
fclose(fp);
for(unsigned int i=0;i<8;i++)
if(pngHead[i] != readHead[i]) return FALSE;
return TRUE;
}
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASS wc;
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_GYAZOWIN));
wc.hCursor = LoadCursor(NULL, IDC_CROSS);
wc.hbrBackground = 0;
wc.lpszMenuName = 0;
wc.lpszClassName = szWindowClass;
RegisterClass(&wc);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = LayerWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_GYAZOWIN));
wc.hCursor = LoadCursor(NULL, IDC_CROSS);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = 0;
wc.lpszClassName = szWindowClassL;
return RegisterClass(&wc);
}
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;
hInst = hInstance;
int x, y, w, h;
x = GetSystemMetrics(SM_XVIRTUALSCREEN);
y = GetSystemMetrics(SM_YVIRTUALSCREEN);
w = GetSystemMetrics(SM_CXVIRTUALSCREEN);
h = GetSystemMetrics(SM_CYVIRTUALSCREEN);
ofX = x; ofY = y;
hWnd = CreateWindowEx(
WS_EX_TRANSPARENT | WS_EX_TOOLWINDOW | WS_EX_TOPMOST
#if(_WIN32_WINNT >= 0x0500)
| WS_EX_NOACTIVATE
#endif
,
szWindowClass, NULL, WS_POPUP,
0, 0, 0, 0,
NULL, NULL, hInstance, NULL);
if (!hWnd) return FALSE;
MoveWindow(hWnd, x, y, w, h, FALSE);
ShowWindow(hWnd, SW_SHOW);
UpdateWindow(hWnd);
SetTimer(hWnd, 1, 100, NULL);
hLayerWnd = CreateWindowEx(
WS_EX_TOOLWINDOW
#if(_WIN32_WINNT >= 0x0500)
| WS_EX_LAYERED | WS_EX_NOACTIVATE
#endif
,
szWindowClassL, NULL, WS_POPUP,
100, 100, 300, 300,
hWnd, NULL, hInstance, NULL);
SetLayeredWindowAttributes(hLayerWnd, RGB(255, 0, 0), 100, LWA_COLORKEY|LWA_ALPHA);
return TRUE;
}
int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0;
UINT size = 0;
ImageCodecInfo* pImageCodecInfo = NULL;
GetImageEncodersSize(&num, &size);
if(size == 0)
return -1; // Failure
pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1; // Failure
GetImageEncoders(num, size, pImageCodecInfo);
for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j; // Success
}
}
free(pImageCodecInfo);
return -1; // Failure
}
VOID drawRubberband(HDC hdc, LPRECT newRect, BOOL erase)
{
static BOOL firstDraw = TRUE;
static RECT lastRect = {0};
static RECT clipRect = {0};
if(firstDraw) {
ShowWindow(hLayerWnd, SW_SHOW);
UpdateWindow(hLayerWnd);
firstDraw = FALSE;
}
if (erase) {
ShowWindow(hLayerWnd, SW_HIDE);
}
clipRect = *newRect;
if ( clipRect.right < clipRect.left ) {
int tmp = clipRect.left;
clipRect.left = clipRect.right;
clipRect.right = tmp;
}
if ( clipRect.bottom < clipRect.top ) {
int tmp = clipRect.top;
clipRect.top = clipRect.bottom;
clipRect.bottom = tmp;
}
MoveWindow(hLayerWnd, clipRect.left, clipRect.top,
clipRect.right- clipRect.left + 1, clipRect.bottom - clipRect.top + 1,true);
return;
}
BOOL convertPNG(LPCTSTR destFile, LPCTSTR srcFile)
{
BOOL res = FALSE;
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
CLSID clsidEncoder;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
Image *b = new Image(srcFile, 0);
if (0 == b->GetLastStatus()) {
if (GetEncoderClsid(L"image/png", &clsidEncoder)) {
if (0 == b->Save(destFile, &clsidEncoder, 0) ) {
res = TRUE;
}
}
}
delete b;
GdiplusShutdown(gdiplusToken);
return res;
}
BOOL savePNG(LPCTSTR fileName, HBITMAP newBMP)
{
BOOL res = FALSE;
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
CLSID clsidEncoder;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
Bitmap *b = new Bitmap(newBMP, NULL);
if (GetEncoderClsid(L"image/png", &clsidEncoder)) {
if (0 ==
b->Save(fileName, &clsidEncoder, 0) ) {
res = TRUE;
}
}
delete b;
GdiplusShutdown(gdiplusToken);
return res;
}
LRESULT CALLBACK LayerWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
RECT clipRect = {0, 0, 500, 500};
HBRUSH hBrush;
HPEN hPen;
HFONT hFont;
switch (message)
{
case WM_ERASEBKGND:
GetClientRect(hWnd, &clipRect);
hdc = GetDC(hWnd);
hBrush = CreateSolidBrush(RGB(100,100,100));
SelectObject(hdc, hBrush);
hPen = CreatePen(PS_DASH,1,RGB(255,255,255));
SelectObject(hdc, hPen);
Rectangle(hdc,0,0,clipRect.right,clipRect.bottom);
int fHeight;
fHeight = -MulDiv(8, GetDeviceCaps(hdc, LOGPIXELSY), 72);
hFont = CreateFont(fHeight,
0,
0,
0,
FW_REGULAR,
FALSE,
FALSE,
FALSE,
ANSI_CHARSET,
OUT_DEFAULT_PRECIS,
CLIP_DEFAULT_PRECIS,
PROOF_QUALITY,
FIXED_PITCH | FF_MODERN,
L"Tahoma");
SelectObject(hdc, hFont);
int iWidth, iHeight;
iWidth = clipRect.right - clipRect.left;
iHeight = clipRect.bottom - clipRect.top;
wchar_t sWidth[200], sHeight[200];
swprintf_s(sWidth, L"%d", iWidth);
swprintf_s(sHeight, L"%d", iHeight);
int w,h,h2;
w = -fHeight * 2160;
h = -fHeight * 3840;
h2 = h + fHeight;
SetBkMode(hdc,TRANSPARENT);
SetTextColor(hdc,RGB(0,0,0));
TextOut(hdc, clipRect.right-w+1,clipRect.bottom-h+1,(LPCWSTR)sWidth,wcslen(sWidth));
TextOut(hdc, clipRect.right-w+1,clipRect.bottom-h2+1,(LPCWSTR)sHeight,wcslen(sHeight));
SetTextColor(hdc,RGB(255,255,255));
TextOut(hdc, clipRect.right-w,clipRect.bottom-h,(LPCWSTR)sWidth,wcslen(sWidth));
TextOut(hdc, clipRect.right-w,clipRect.bottom-h2,(LPCWSTR)sHeight,wcslen(sHeight));
DeleteObject(hPen);
DeleteObject(hBrush);
DeleteObject(hFont);
ReleaseDC(hWnd, hdc);
return TRUE;
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
static BOOL onClip = FALSE;
static BOOL firstDraw = TRUE;
static RECT clipRect = {0, 0, 0, 0};
switch (message)
{
case WM_RBUTTONDOWN:
DestroyWindow(hWnd);
return DefWindowProc(hWnd, message, wParam, lParam);
break;
case WM_TIMER:
if (GetKeyState(VK_ESCAPE) & 0x8000){
DestroyWindow(hWnd);
return DefWindowProc(hWnd, message, wParam, lParam);
}
break;
case WM_MOUSEMOVE:
if (onClip) {
clipRect.right = LOWORD(lParam) + ofX;
clipRect.bottom = HIWORD(lParam) + ofY;
hdc = GetDC(NULL);
drawRubberband(hdc, &clipRect, FALSE);
ReleaseDC(NULL, hdc);
}
break;
case WM_LBUTTONDOWN:
{
onClip = TRUE;
clipRect.left = LOWORD(lParam) + ofX;
clipRect.top = HIWORD(lParam) + ofY;
SetCapture(hWnd);
}
break;
case WM_LBUTTONUP:
{
onClip = FALSE;
ReleaseCapture();
clipRect.right = LOWORD(lParam) + ofX;
clipRect.bottom = HIWORD(lParam) + ofY;
HDC hdc = GetDC(NULL);
drawRubberband(hdc, &clipRect, TRUE);
if ( clipRect.right < clipRect.left ) {
int tmp = clipRect.left;
clipRect.left = clipRect.right;
clipRect.right = tmp;
}
if ( clipRect.bottom < clipRect.top ) {
int tmp = clipRect.top;
clipRect.top = clipRect.bottom;
clipRect.bottom = tmp;
}
int iWidth, iHeight;
iWidth = clipRect.right - clipRect.left + 1;
iHeight = clipRect.bottom - clipRect.top + 1;
if(iWidth == 0 || iHeight == 0) {
ReleaseDC(NULL, hdc);
DestroyWindow(hWnd);
break;
}
HBITMAP newBMP = CreateCompatibleBitmap(hdc, iWidth, iHeight);
HDC newDC = CreateCompatibleDC(hdc);
SelectObject(newDC, newBMP);
BitBlt(newDC, 0, 0, iWidth, iHeight,
hdc, clipRect.left, clipRect.top, SRCCOPY);
ShowWindow(hWnd, SW_HIDE);
TCHAR tmpDir[MAX_PATH], tmpFile[MAX_PATH];
GetTempPath(MAX_PATH, tmpDir);
GetTempFileName(tmpDir, _T("gya"), 0, tmpFile);
if (savePNG(tmpFile, newBMP)) {
if (!uploadFile(hWnd, tmpFile)) {
}
} else {
MessageBox(hWnd, _T("Cannot save png image"), szTitle,
MB_OK | MB_ICONERROR);
}
DeleteFile(tmpFile);
DeleteDC(newDC);
DeleteObject(newBMP);
ReleaseDC(NULL, hdc);
DestroyWindow(hWnd);
PostQuitMessage(0);
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
VOID setClipBoardText(const char* str)
{
HGLOBAL hText;
char *pText;
size_t slen;
slen = strlen(str) + 1;
hText = GlobalAlloc(GMEM_DDESHARE | GMEM_MOVEABLE, slen * sizeof(TCHAR));
pText = (char *)GlobalLock(hText);
strncpy_s(pText, slen, str, slen);
GlobalUnlock(hText);
OpenClipboard(NULL);
EmptyClipboard();
SetClipboardData(CF_TEXT, hText);
CloseClipboard();
GlobalFree(hText);
}
VOID execUrl(const char* str)
{
size_t slen;
size_t dcount;
slen = strlen(str) + 1;
TCHAR *wcUrl = (TCHAR *)malloc(slen * sizeof(TCHAR));
mbstowcs_s(&dcount, wcUrl, slen, str, slen);
SHELLEXECUTEINFO lsw = {0};
lsw.cbSize = sizeof(SHELLEXECUTEINFO);
lsw.lpVerb = _T("open");
lsw.lpFile = wcUrl;
ShellExecuteEx(&lsw);
free(wcUrl);
}
std::string getId()
{
TCHAR idFile[_MAX_PATH];
TCHAR idDir[_MAX_PATH];
SHGetSpecialFolderPath( NULL, idFile, CSIDL_APPDATA, FALSE );
_tcscat_s( idFile, _T("\\Gyazo"));
_tcscpy_s( idDir, idFile);
_tcscat_s( idFile, _T("\\id.txt"));
const TCHAR* idOldFile = _T("id.txt");
BOOL oldFileExist = FALSE;
std::string idStr;
std::ifstream ifs;
ifs.open(idFile);
if (! ifs.fail()) {
ifs >> idStr;
ifs.close();
} else{
std::ifstream ifsold;
ifsold.open(idOldFile);
if (! ifsold.fail()) {
ifsold >> idStr;
ifsold.close();
}
}
return idStr;
}
BOOL saveId(const WCHAR* str)
{
TCHAR idFile[_MAX_PATH];
TCHAR idDir[_MAX_PATH];
SHGetSpecialFolderPath( NULL, idFile, CSIDL_APPDATA, FALSE );
_tcscat_s( idFile, _T("\\Gyazo"));
_tcscpy_s( idDir, idFile);
_tcscat_s( idFile, _T("\\id.txt"));
const TCHAR* idOldFile = _T("id.txt");
size_t slen;
size_t dcount;
slen = _tcslen(str) + 1;
char *idStr = (char *)malloc(slen * sizeof(char));
wcstombs_s(&dcount, idStr, slen, str, slen);
CreateDirectory(idDir,NULL);
std::ofstream ofs;
ofs.open(idFile);
if (! ofs.fail()) {
ofs << idStr;
ofs.close();
if (PathFileExists(idOldFile)){
DeleteFile(idOldFile);
}
}else{
free(idStr);
return FALSE;
}
free(idStr);
return TRUE;
}
BOOL uploadFile(HWND hwnd, LPCTSTR fileName)
{
const TCHAR* UPLOAD_SERVER = _T("mysite.com");
const TCHAR* UPLOAD_PATH = _T("/gyazo.php");
const char* sBoundary = "----BOUNDARYBOUNDARY----";
const char sCrLf[] = { 0xd, 0xa, 0x0 };
const TCHAR* szHeader =
_T("Content-type: multipart/form-data; boundary=----BOUNDARYBOUNDARY----");
std::ostringstream buf;
std::string idStr;
//
idStr = getId();
buf << "--";
buf << sBoundary;
buf << sCrLf;
buf << "content-disposition: form-data; name=\"id\"";
buf << sCrLf;
buf << sCrLf;
buf << idStr;
buf << sCrLf;
buf << "--";
buf << sBoundary;
buf << sCrLf;
buf << "content-disposition: form-data; name=\"imagedata\"; filename=\"gyazo\"";
buf << sCrLf;
buf << sCrLf;
std::ifstream png;
png.open(fileName, std::ios::binary);
if (png.fail()) {
MessageBox(hwnd, _T("PNG open failed"), szTitle, MB_ICONERROR | MB_OK);
png.close();
return FALSE;
}
buf << png.rdbuf();
png.close();
buf << sCrLf;
buf << "--";
buf << sBoundary;
buf << "--";
buf << sCrLf;
std::string oMsg(buf.str());
HINTERNET hSession = InternetOpen(szTitle,
INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
if(NULL == hSession) {
MessageBox(hwnd, _T("Cannot configure wininet"),
szTitle, MB_ICONERROR | MB_OK);
return FALSE;
}
HINTERNET hConnection = InternetConnect(hSession,
UPLOAD_SERVER, INTERNET_DEFAULT_HTTP_PORT,
NULL, NULL, INTERNET_SERVICE_HTTP, 0, NULL);
if(NULL == hSession) {
MessageBox(hwnd, _T("Cannot initiate connection"),
szTitle, MB_ICONERROR | MB_OK);
return FALSE;
}
HINTERNET hRequest = HttpOpenRequest(hConnection,
_T("POST"), UPLOAD_PATH, NULL,
NULL, NULL, INTERNET_FLAG_DONT_CACHE | INTERNET_FLAG_RELOAD, NULL);
if(NULL == hSession) {
MessageBox(hwnd, _T("Cannot compose post request"),
szTitle, MB_ICONERROR | MB_OK);
return FALSE;
}
const TCHAR* ua = _T("User-Agent: Gyazowin/1.0\r\n");
BOOL bResult = HttpAddRequestHeaders(
hRequest, ua, _tcslen(ua),
HTTP_ADDREQ_FLAG_ADD | HTTP_ADDREQ_FLAG_REPLACE);
if (FALSE == bResult) {
MessageBox(hwnd, _T("Cannot set user agent"),
szTitle, MB_ICONERROR | MB_OK);
return FALSE;
}
if (HttpSendRequest(hRequest,
szHeader,
lstrlen(szHeader),
(LPVOID)oMsg.c_str(),
(DWORD) oMsg.length()))
{
DWORD resLen = 8;
TCHAR resCode[8];
HttpQueryInfo(hRequest, HTTP_QUERY_STATUS_CODE, resCode, &resLen, 0);
if( _ttoi(resCode) != 200 ) {
MessageBox(hwnd, _T("Failed to upload (unexpected result code, under maintainance?)"),
szTitle, MB_ICONERROR | MB_OK);
} else {
DWORD idLen = 100;
TCHAR newid[100];
memset(newid, 0, idLen*sizeof(TCHAR));
_tcscpy_s(newid, _T("X-Gyazo-Id"));
HttpQueryInfo(hRequest, HTTP_QUERY_CUSTOM, newid, &idLen, 0);
if (GetLastError() != ERROR_HTTP_HEADER_NOT_FOUND && idLen != 0) {
saveId(newid);
}
DWORD len;
char resbuf[1024];
std::string result;
while(InternetReadFile(hRequest, (LPVOID) resbuf, 1024, &len)
&& len != 0)
{
result.append(resbuf, len);
}
result += '\0';
setClipBoardText(result.c_str());
execUrl(result.c_str());
return TRUE;
}
} else {
MessageBox(hwnd, _T("Failed to upload"), szTitle, MB_ICONERROR | MB_OK);
}
return FALSE;
} 
#2. Posted:
Status: Offline
Joined: Dec 30, 201310Year Member
Posts: 1,331
Reputation Power: 69
Are you capturing it with a selection tool or just a preset area?
-Framework
-Framework
- 0useful
- 0not useful
#3. Posted:
Status: Offline
Joined: Jan 16, 201212Year Member
Posts: 20,271
Reputation Power: 17066
Motto: 2b || !2b
Motto: 2b || !2b
Status: Offline
Joined: Jan 16, 201212Year Member
Posts: 20,271
Reputation Power: 17066
Motto: 2b || !2b
Framework wrote Are you capturing it with a selection tool or just a preset area?It works the same as Gyazo so It's a custom resolution everytime, it just limits me to 2560x1440.
-Framework
- 0useful
- 0not useful
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